Leaf Palisade mesophyll Carry out photosynthesis. Spongy mesophyll Allow gases to circulate for the exchange of gases between the leaf and the environment. Carry out photosynthesis. Guard cells ...

In addition to the nucleus, eukaryotic cells may contain several other types of organelles, which may include mitochondria, chloroplasts, the endoplasmic reticulum, the Golgi apparatus ...

In the beginning, one cell becomes two, and two become four. Being fruitful, they multiply into a ball of many cells, a shimmering sphere of human potential. Scientists have long dreamed of ...

They're mysterious cells in the brain's visual cortex called OPCs. The visual cortex processes everything we see. Incoming visual information is relayed to this outer layer of the brain via ...

Upon absorption by the root, water first crosses the epidermis and then makes its way toward the center of the root crossing the cortex ... bundle sheath cells and into the mesophyll cells ...

In a new study conducted by the Realizing Increased Photosynthetic Efficiency (RIPE) project, researchers at the University ...

Take the evolution of sex, for instance. To make the move from asexual to sexual reproduction, nature took a system by which parent cells reproduced simply by dividing (asexual reproduction ...

The CD4 count is a test that measures how many CD4 cells you have in your blood. These are a type of white blood cell, called T cells, that move throughout your body to find and destroy bacteria ...

When you buy through our links, we may earn a commission. Learn more› By Rob Pegoraro If you haven’t looked at what your cell phone bill might be under a new plan or on a new service ...