TASK DEFINITION: In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
PROBLEM: Human normal peripheral blood B - lymphocytes are deficient in DNA - dependent protein kinase activity due to the expression of a variant form of the Ku86 protein .

SOLUTION: Ku86 protein

PROBLEM: BCL - 6 is essential for germinal center formation and thus for affinity maturation of immunoglobulin ( Ig ) genes by somatic mutations .

SOLUTION: BCL - 6

PROBLEM: These findings suggest that T cells are heterogeneous with respect to their quantity of glucocorticoid receptors .

SOLUTION:
glucocorticoid receptors