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.

[Q]:  Paradoxically there is a decrease in the level of soluble A beta secreted from the cells .
[A]: soluble A beta


[Q]:  Long - range mapping by pulse - field gel electrophoresis indicated that the three mdr genes are closely linked on a genomic DNA segment of approximately 625 kilobases .
[A]: mdr genes


[Q]:  Upstream of the afa - 3 gene cluster , a 1 . 2 - kb region was found to be 96 % identical to the RepFIB sequence of one of the enterotoxigenic E . coli plasmids ( P307 ) , suggesting a common ancestor plasmid .
[A]:
RepFIB sequence