vacuole-mediated organelle clearance and cell death lead to mature, xylem-like hyaline cells. Stem or progenitor cells have so far remained elusive in sea anemones or corals. Here, the authors ...

The immune system is the body’s tool for preventing or limiting infection. Its complex network of cells, organs, proteins, and tissues enables the immune system to defend the body from pathogens.

What Is Cord Blood Banking? Cord blood banking is a process of collecting potentially life-saving stem cells from the umbilical cord and placenta and storing them for future use. Stem cells are ...

Cambium cells and xylem cells can be clearly distinguished by staining. Usually, lignified cells (mature xylem cells) are stained red or purple, and non-lignified cells (cambium cells) are stained ...

Your body is made of cells -- trillions of them. Cells are the basic building blocks of people and all other living things. Researchers study them to learn more about health and diseases.

You, me, and all of the 108 billion or so Homo sapiens who’ve ever walked the Earth have all been our own constellation of some 30 trillion cells. Each of our bodies is a collective organism of ...

It's made up of a complicated network of cells and organs. It protects the body from infection, cancer, and other conditions. Lymph nodes are part of the immune system. They send out lymphocytes.

Here, reconstruction of a plant cell (xylem) with its cellulose fibers labeled red (left). The center reconstruction shows the orientation of each cellulose fiber, with orientation indicated by color.