Forensic serology ppt

Visual examination of evidence Presumptive screening test Is it blood? Confirmation test Seriously, is it blood? Determine species origin human blood? Identify the blood whose blood is it? SerologyTest Test Serology hnqikf gmail.

Species Origin 1 Most methods test for serum proteins Serum proteins are found in all animals, but are slightly different Species ID methods based on antigenantibody interactions.

Ring Precipitin Test 2 Blood sample dilute in top layer Antiserum in heavy bottom layer. Identify The Blood If a stain is blood, and it is human blood, then whose is it?

Blood Group Markers 2. ABO Markers 3 Testing is similar to species test An anti-A, anti-B, or anti-AB antiserum containing antibodies is reacted with the blood stain to detect blood cells A, B, or AB blood cells are reacted with a blood stain to detect antibodies Tests can get complicated with absorbing and releasing cells Final step is usually testing for agglutination hnqikf gmail.

Protein or Enzyme Markers 1 Some protein or enzymes can be in different forms different shapes These differences can be detected by separating the protein in a gel by electrophoresis. Charge makes proteins move through gel Different shapes move at different rates After several minutes, their location will tell what type they are. Semen Consist of: 1. Sperm cells 2. Acid Phosphatase Test b. Prostate Specific Antigen p Polyacrylamide Gel 2. Buffer pH 8,5 3. Substrate: 4-methylumbelliferyl phosphate 4.

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Start Free Trial Cancel anytime. Forensic Serology. Uploaded by Yosi W Kusuma. Document Information click to expand document information Description: lecture. Date uploaded Aug 22, Did you find this document useful? Is this content inappropriate? Report this Document. Description: lecture. Flag for inappropriate content. Download Now. Related titles. Carousel Previous Carousel Next. Jump to Page.

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Search inside document. Henky, Sp.Welcome to Forensics. I can be reached at kimberly. Weekly Schedules:. Observations and Eyewitness Basics. Student Resources:. Crime Scenes. Student Resources. Skip to main content.

Side panel. You are currently using guest access Log in. Topic outline General. News forum. Topic 1. Welcome to Forensics I can be reached at kimberly. Safety Policies and Contract File. Forensics - Current Events File. Case Study Analysis File. Week of September 2, Page.

Week of September 8, Page. Week of September 16, Page. Week of September 21, Page. Week of September 28, Page. Week of October 5, Page. Week of October 13, Page. Week of October 19, Page. Week of October 26, Page. Week of November 2, Page. Week of November 9, Page. Week of November 16, Page. Week of November 23, Page. Week of November 30, Page.

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Week of December 7, Page. Week of January 8, Page. Topic 2.

forensic serology ppt

Eyewitness Basics - PowerPoint File. Eyewitness Basics Notes File.

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Observation Activity File. Topic 3.Forensic Serology Serology term used to describe a broad range of laboratory tests using reactions of blood serum and body fluid The serology section of a forensic laboratory may deal with any or all of the following: blood typing characterization of unknown blood stain patterns for crime reconstruction paternity testing semen identification in rape cases DNA techniques used for identification.

Forensic Characterization of Bloodstains Three questions that must be answered by the forensic investigator: 1 Is it blood? Luminol Red blood cells contain hemoglobin Hb the protein responsible for transporting oxygen Each Hb contains four iron Fe containing hemes. How does Luminol detect blood? Blood is slightly alkali Hemoglobin is a ferrous compound Metals are a catalyst in the reaction between an alkali and Luminol Hemoglobin.

Blood Antigens On the surface of red blood cells are chemical structures proteins called antigens. The presence of antigens allow a living system to recognize foreign biological substances Antigens also impart specific characteristics to the red blood cells. These characteristics can be partly used to identify individuals Human red blood cells have more than 15 different antigen types that have been discovered.

Blood Typing Blood also contains antibodies proteins that recognize and bind to certain, specific antigens Blood Type. Blood Typing When blood containing a specific antigen is mixed with blood containing the corresponding antibodies, the blood clots The clots can then be removed by the host system. Blood Typing Human serum containing specific antibodies can be purchased Separately mix a drop of unknown blood sample with drop of each anti-serum Reaction between blood and anti-serum No reaction between blood and anti-serum.

In terms of the A-B-O and Rh systems, what type blood is the sample?

Forensic Serology - PowerPoint PPT Presentation

Projected Bloodstains occur in shootings, trauma from blunt weapons, hacking, or slashing attacks. Forensic Characterization of Semen Many crimes involve sexual misconduct Normal males, upon ejaculation, release seminal fluid.

This fluid is a mixture of components: water spermatozoa enzymes inorganic salts Semen at a crime scene clothing, bed sheets, carpet, cushions can be located and identified by three common methods: microscope examination to find sperm acid phosphatase test p30 also called prostrate specific antigen immunoassay test.

Adults produce 1. A simple test for saliva involves mixing starch, iodine, and a sample of the presumed saliva together. Starch and iodine are a deep blue color when mixed together. The amylase breaks down starch, however, and the color fades takes about 15 mins 37 oC.

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Uploaded by Alfiani Rosyida Arisanti Syafi'i.The Forensics Serology PowerPoint is fully editable. This will allow you to modify the lesson to your individual classroom needs. PDF versions of the notes and worksheets are also included.

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You cannot copy or modify any part of this lesson to offer others for free or for sale. This is designed to be a group activity. The class is split up into groups. Each group is given an article about a particular historical case where Forensic Serology was used to help solve the crime. My TpT Store. My Facebook Page. Please go to your My Purchases page you may need to login. Beside each purchase you'll see a Provide Feedback button.

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forensic serology ppt

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All Categories. Grade Level. Resource Type. Log In Join Us. View Wish List View Cart. View Preview. Preview Included Products. Grade Levels. File Type. The PowerPoint is fully editable. This will allow you to modify the lesson to your. The groups then reads through their article, and fill out th.Your browser is unable to render the navigation correctly.


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Turn on more accessible mode. Turn off more accessible mode. Skip Ribbon Commands. Skip to main content. Media Center. Contact DPS. Serology Page Content. The identification of bodily fluids is known as serology. Currently, BCA serology includes blood, semen, saliva, and urine identification. The phenolphthalein test is used to presumptively test for the presence of blood. The chemicals used are ethanol, phenolphthalein, and hydrogen peroxide. Phenolphthalein testing works through a Redox reaction where the chemicals start in a reduced form.

forensic serology ppt

If peroxidase activity from the heme group found on the Hemoglobin molecule in blood is present, the chemicals are oxidized.Sign up today for your free subscription to the Forensic Teacher! During the school year I started teaching a 9-week course on Forensic Science as one of our 8th grade activity classes.

A brief outline is available in PDF format - Quarter Outline and a list of supplies is available at the bottom of this page. Listed below are the powerpoints, worksheets, and other resources I use during the class. I have a SmartBoard in my classroom and many of the presentations unit and review are set up so students can help me fill in the answers as we discuss the notes or while they check their worksheets.

Please e-mail me if you have any questions. The cards are printed on card stock back-to-back and laminated for student use. Students use overhead markers to add notes to the pages as we discuss each lesson and keep them to review for the unit quizzes. You could also have students record their answers in a lab notebook rather than write on the pages. At the end of the unit, they clean them off with a wet cloth and turn them in so they are ready for the next class! Less paper wasted and less time copying - a double bonus!

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In addition, the reference card format will allow special education students and other students with learning challenges to focus on the lesson and avoids possible frustration at trying to keep up with the class notes. They will have all the information they need in one place.

I start each class period with a warm-up activity targeting forensic science concepts and other skills observation, problem-solving, etc. The challenges are in the form of PowerPoint presentations and include spot-the-differences puzzles, mini mysteries, trivia challenges, and vocabulary builders.

I have also created several warm-ups that incorporate CSI-related videos that are available online.

Forensic biology and serology: introduction (FSC)

Back to top. During this unit students learn basic vocabulary associated with crime scene analysis as well as explore testimonial evidence eyewitness accounts and FACES facial composites software to create - see the list of supply companies at the bottom of this page.

They also get a chance to investigate a crime through the CHIN Interactive Investigator website, which helps to introduce them to many of the topics we discuss throughout the quarter-long class.

Also available They use the letters that remain in the puzzle to figure out a mystery word. Memory Match Game PDF - This game challenges a student's ability to remember what they've seen as they examine cards with a variety of patterns on them. Game rules and pattern cards are provided in the download. Check out my new version of the FBI Crime Lab video worksheet that includes discussion questions for each section.

TV versions. During this unit students explore the various types of physical evidence that can be found at a crime scene and learn how they are used to help investigators. The lesson can be adapted to fit any holiday in order to be used at other times of the year. The download includes student worksheets and teacher notes. Fingerprinting Basics.

During this unit students learn how to identify the different fingerprint patterns as well as other details that help investigators match fingerprints.

They are able to practice making and lifting prints and are challenged to match unknown and known in the Fingerprint Challenge. I purchased ink pads, black powder, brushes, and other materials to make several kits to allow students to work in small groups.

See the list of supply companies at the bottom of this page. They are less messy than the traditional black powder and fiber brushes. Questions about the reference cards? See the note at the top of this page. Other Fingerprinting Resources:. Visit the Forensic Science page at the Kid Zone for the sites.After you enable Flash, refresh this page and the presentation should play. Get the plugin now. Toggle navigation. Help Preferences Sign up Log in.

To view this presentation, you'll need to allow Flash. Click to allow Flash After you enable Flash, refresh this page and the presentation should play. View by Category Toggle navigation. Products Sold on our sister site CrystalGraphics. Title: Forensic Serology. Description: Forensic Serology. Forensic Chemistry. Jackie Judy. Forensic Serologists study blood, semen, saliva and other bodily fluids for use in legal cases Tags: forensic serology.

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