In Ouchterlny immunodiffusion, what does a spur at the intersection of two lines indicate about the relationship of the two antigens?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the Stevens Immunology-Serology Test. Explore flashcards and multiple choice questions with detailed explanations and hints. Get exam ready now!

Multiple Choice

In Ouchterlny immunodiffusion, what does a spur at the intersection of two lines indicate about the relationship of the two antigens?

Explanation:
In this test, spurs in the Ouchterlny immunodiffusion pattern tell you that the two antigens share some epitopes but differ by additional determinants in one of them. The spur extends toward the well with the antigen that has that extra determinant, because antibodies react with both the shared epitopes and the unique determinant. So a spur at the intersection indicates partial identity with one antigen being more complex than the other. In this case, antigen 2 has the extra determinants and is more complex than antigen 1.

In this test, spurs in the Ouchterlny immunodiffusion pattern tell you that the two antigens share some epitopes but differ by additional determinants in one of them. The spur extends toward the well with the antigen that has that extra determinant, because antibodies react with both the shared epitopes and the unique determinant. So a spur at the intersection indicates partial identity with one antigen being more complex than the other. In this case, antigen 2 has the extra determinants and is more complex than antigen 1.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy