Stem cells function as a source of new cells to grow or replace specialised tissues. To perform this function, these cells must divide to renew themselves, while some of their descendants ...

Unlike plants, animals can’t carry out photosynthesis to generate our own oxygen, yet our brains rely on oxygen to make the massive amounts of energy needed to function ... macrophages from induced ...

Researchers have known that photoreceptors help seedlings detect when they have reached ample sunlight, when to stop elongating their stems and when to begin photosynthesis to produce energy.