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.
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Question:  In contrast to the p16 - mediated G1 block , G1 arrest mediated by the cdk inhibitors p21Cip1 or p27Kip1 cannot be bypassed either by inactivation of pRb or overexpression of E2F family members .

Answer: E2F family members


Question:  Recombinant caspases are typically produced in Escherichia coli expression systems with the attendant problems of solubilization , re - folding and activation of the protease .

Answer: Recombinant caspases


Question:  G - CSF ( 10 microg / kg ) was started on day + 1 and all patients engrafted within a median day number of 12 ( range , 10 - 22 ) until leukocytes > 1 . 0 x 10 ( 9 ) / l and a median day number of 56 ( range , 10 - 180 ) until platelets > 20 . 0 x 10 ( 9 ) / l ( ie platelet transfusion independence ) .

Answer:
G - CSF