The diagram shows the epidermis of human skin. This is formed of four layers of cells.
Cells in each layer have specific functions which are outlined on the diagram. As the cells are produced, they move upwards as shown by the arrow.
Which row shows cells that are acting as stem cells in the skin epidermis and an organelle needed by the keratinocytes?
1 )
A
B
3 )
C
4 )
D
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