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.

Ex Input:
 Based on these observations , we suggest that , at the cartilage mineralization front , an elevation in local environmental Ca2 + and Pi concentrations modulates oxidative metabolism , and triggers apoptosis of terminally differentiated chondrocytes .

Ex Output:
chondrocytes


Ex Input:
 A decrease in dosage of Sox9 by haploinsufficiency in NCC - derived tissues resulted in delayed PF suture closure .

Ex Output:
NCC


Ex Input:
 Our panel of specific PTPase primers should be very useful for semiquantitatively assessing the repertoire of PTPases expressed by cells .

Ex Output:

cells