Acute inflammatory stimuli in the form of contact lens application reduced the number of T ... But now, [the authors] have found that in healthy human subjects, we have T cells entering and leaving ...

For human health, prematurely aging cells are a big problem. When a cell ages and stops growing, its function changes, which can cause or worsen cardiovascular disease, Alzheimer's disease and other ...

Eventually, the light-sensitive spot evolved into a retina, the layer of cells and pigment at the back of the human eye. Over time a lens formed at the front of the eye. It could have arisen as a ...

Background The human lens is continuously exposed to high levels of light. Ultraviolet radiation is believed to play a causative role in the development of cataract. In vivo, however, the lens is ...

Although that may sound strange, human red blood cells are the most common cells lacking mitochondria. Other examples include tissues of the eyes, such as the lens, which is almost totally devoid ...