Simulated Blood

 

Student Procedure:

 

1. Place a small piece of the cloth in each of the wells in the blood typing trays.
2. Add 3-4 drops of the simulated anti-A serum on the blood stained cloth that’s in
    the A well of the tray.
3. Add 3-4 drops of the simulated anti-B serum on the blood stained cloth that’s in
    the B well of the tray.
4. Add 3-4 drops of the simulated anti-Rho serum on the blood stained cloth that’s
    in the A well of the tray.
5. Use separate toothpicks to stir each sample of anti-serum and blood stained
    cloth.
6. Place 3-4 drops of the victim’s blood in each of the A, B, and Rho wells of Tray
    #2: Victim.
7. Place 3-4 drops of the victim’s blood in each of the A, B, and Rho wells of Tray
    #3: Suspect #1.
8. Place 3-4 drops of the victim’s blood in each of the A, B, and Rho wells of Tray
    #4: Suspect #2.
9. Place 3-4 drops of the victim’s blood in each of the A, B, and Rho wells of Tray
    #5: Suspect #3.
10. Place 3-4 drops of the victim’s blood in each of the A, B, and Rho wells of Tray
     #6: Suspect #4.
11. Place 3-4 drops of the simulated anti-A serum in each A well on the trays.
12. Place 3-4 drops of the simulated anti-B serum in each B well on the trays.
13. Add 3-4 drops of the simulated anti-Rho serum in each Rho well on the trays.

14. Use separate toothpicks to stir each sample of serum and blood.
15. Match the blood type on the cloth to the suspects

 

Decide who committed the crime. 

 

Anti-A Serum

Anti-B Serum

Blood Type

Clumping

No Clumping

Type A

No Clumping

Clumping

Type B

Clumping

Clumping

Type AB

No Clumping

No Clumping

Type O

Data Table:

Blood Source

Anti-A

Anti-B

Anti-Rho

Blood Type

Crime Scene

_________ _________ _________ _________

Victim

_________ _________ _________ _________

Suspect #1

_________ _________ _________ _________

Suspect #2

_________ _________ _________ _________

Suspect #3

_________ _________ _________ _________

Suspect #4

_________ _________ _________ _________