Caption Schematic diagram showing how a subset of immune cells, named DN2a T cells, mature into DN2b T cells. The maturation of this step is among the earliest in immune cell development and is ...

We can see how circuits work, and represent them with some simple diagrams, using basic electrical components like these. You start with a cell, or combination of cells. These could be batteries ...

The sun is the ultimate source of energy for virtually all organisms. Photosynthetic cells are able to use solar energy to synthesize energy-rich food molecules and to produce oxygen.

Neurons or the nerve cells form the basic components of the ... stile and ovary as shown in the following diagram of longitudinal section of flower. The male reproductive part of the flower ...