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

A: EcoRI fragment
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Q:  An additional stimulation of D1 receptors by giving SKF38393 30 min later produced an almost continuous pattern of jaw openings but less closure movements from the rest position , and the openings were accompanied by frequent tongue protrusions .

A: D1 receptors
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Q:  The addition of novel techniques , such as histopathologic ultrastaging , immunohistochemistry staining , and reverse transcriptase polymerase chain reaction assays , will help increase the accuracy and rate of detection of disease .

A:
reverse transcriptase
****