University of Texas, El Paso

BIOLOGY 2311

Exercise 12: Serological Testing: Activity 2: Comparing Samples with Ouchterlony Double Diffusion Lab Report Pre-lab Quiz Results

1)When two antigens are identical their precipitin lines form

2. Antigen and antibody move toward each other because of

3. If two antigens form a spur, they

4. The Ouchterlony test relies on the formation of a(n)

Experiment Results Predict Question:

Predict Question1: How do you think human serum albumin and bovine serum albumin will compare?  

Stop & Think Questions:

2. Which of the following best describes the two solutions you just added to well 1?

Experiment Data:

Post-lab Quiz Results

1. There is a spur between wells 2 and 5 and between wells 3 and 4 because the

2. What is the unknown antigen in well 5 (recall that well 2 contains bovine serum albumin and well 4 contains human serum albumin)?

3. Which of the following best describes this test?

4. The antigen-antibody precipitate forms where the ratio of antigen and antibody is