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: The apparent paradox of heightened adrenal corticosteroid levels associated with reduction in the competence of the body ' s defensive apparatus to cope with exposure to new microbial antigens is considered .

SOLUTION: microbial antigens

PROBLEM: We show here that Bright has multiple contextual requirements to function as a transcriptional activator .

SOLUTION: transcriptional activator

PROBLEM: The cell surface glycoprotein 2B4 ( CD244 ) of the Ig superfamily is involved in the regulation of NK and T lymphocyte functions .

SOLUTION:
Ig superfamily