The sizes of epidermis cell, the lengths of stomatal guard cells and of the terminal cells of T-hair are only quantitative characters, but not of much significances in systematics.

Chemical synapses also serve to amplify neuronal signals, so that even a small presynaptic nerve terminal can alter the response of a large postsynaptic cell.

I found myself wondering if any of the people around him in the terminal, some of them undoubtedly yakking into their own cell phones, had any idea who the amiable gentleman in their midst was.