n children born without a thymus, which would be the most serious symptom? Selec

Question

n children born without a thymus, which would be the most serious symptom?

Select one:

a. A very low population of B lymphocytes.

b. A very low population of T lymphocytes.

c. Elephantiasis of the lower limbs.

d. Poor lymphatic return from the left arm.

The figure below shows the results obtained after performing the Ouchterlony technique. Well 1 was filled with goat anti-human albumin and goat anti-bovine albumin. Wells 2 and 3 contain bovine serum albumin (BSA). Well 4 contains human serum albumin (HSA). Well 5 contains an unknown antigen. The precipitin line formed between wells 2 and 5 and between wells 3 and 4 indicates that the:

Select one:

a. antigens have partial identity

b. antigens have non-identity

c. antibodies have non-identity

d. antibodies have partial identity

e. antibodies are identical

f. wells were empty

g. antigens are identical

Explanation / Answer

(1)b. A very low population of T lymphocytes.

DiGeorge's syndrome is a condition in which children are born without thymus resulting in a complete absence of functional T cells.

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