Part 1. Definition
In this task, you will be given sentences in which you have to recognize the name of the body cells. A cell is a mass of cytoplasm that is bound externally by a cell membrane. Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Although there might be several correct answers, you need to write one of them.
Part 2. Example
HeLa cells were first treated with 250 mug / ml Trail followed by pulse labeling of newly synthesized proteins with [ 35S ] methionine.
Answer: HeLa cells
Explanation: HeLa cells are the first immortal human cell line. It should be tagged.
Part 3. Exercise
 COX - 1 converts arachidonic acid into prostaglandin endoperoxides PGG2 and PGH2 , the latter being , in turn , transformed by Tx synthase into TxA2 , a potent amplifier of platelet aggregation with vasoconstrictive properties .
Answer:
platelet