Cell signalling is the mechanism by which stimuli are transmitted via a signalling cascade to effector molecules that orchestrate the appropriate response. Types of cell signalling pathways ...

Bug-types have been around since Generation I, but the first spider ‘mon didn’t appear until Generation II. Ever since, the series has received a variety of colorful and quirky spider Pokémon.

As a graduate student in 2000, he spent six months trying to build a cell that could periodically alter a tiny bit of its own DNA. After six months of failure, he abandoned the project.