instruction:
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.
question:
 This mutant also functions in vivo as a trans - acting dominant negative regulator : the transcriptional inducibility of the HIV long terminal repeat ( which contains two potential NF - kappa B binding sites ) by phorbol ester ( PMA ) is inhibited when it is co - transfected into CD4 + T cells with the delta SP mutant .
answer:
CD4 +


question:
 Restriction mapping showed that the two recombinant plasmids shared an EcoRI fragment of 8 . 9 kb .
answer:
EcoRI fragment


question:
 In the normal controls the plasma FPA level ( mean + / - SD ) was 1 . 43 + / - 0 . 46 ng / ml .
answer:

plasma FPA