DNA repair
DNA repair refers to a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome . In human cells, both normal metabolic activities and environmental factors such as UV light can cause DNA damage, resulting in as many as 1 mil more
Lung cancer
Lung cancer is a disease of uncontrolled cell growth in tissues of the lung . This growth may lead to metastasis , invasion of adjacent tissue and infiltration beyond the lungs. The vast majority of primary lung cancers are carcinomas of the lung, derived from epithelial cells. Lung more
Saffron
Saffron () is a spice derived from the flower of the saffron crocus (Crocus sativus), a species of crocus in the family Iridaceae . The flower has three stigma s, which are the distal ends of the plant's carpel s. Together with its style, the stalk connecting the stigmas to the rest of more
Flight feather (Milvus milvus) in flight, showing remiges and rectrices
Flight feathers are the long, stiff, asymmetrically shaped, but symmetrically paired feather s on the wing s or tail of a bird ; those on the wings are called remiges (singular remex) while those on the tail are called rectri more
Asthma
Asthma is a chronic condition involving the respiratory system in which the airway occasionally constricts, becomes inflamed , and is lined with excessive amounts of mucus , often in response to one or more triggers. These episodes may be triggered by such things as exposure to an envir more