Within multicellular organisms, cells build connections with each other forming cell layers that cover the surfaces of tissues and organs and separate structures in the body. For example, the skin ...

The skin is the largest organ in the human body, and its outermost part, called the epidermis, is replenished every three weeks. The cells fueling this renewal of the epidermal stem cells, found in ...

Cells of organs and tissues commonly communicate directly with one another via permeable membrane junctions. Cell-to-cell channels, spanning the width of both membranes of a junction, are thought to ...

With the increasing exploration of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) – the causative pathogen of coronavirus disease 2019 (COVID-19) pandemic – it has become clear that ...

Developmental biologists have discovered that during egg development in fruit flies, intercellular gaps open between epithelial cells in a controlled way at the points where three cells meet. This ...