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The umbo is the center of the foveola which in turn is located at the center of the fovea. The fovea is located near the center of the macula. It is a small pit that contains the largest concentration of cone cells. The retina's receptor layer contains two types of photosensitive cells, the rod cells and the cone cells.
The centrosome is copied only once per cell cycle, so that each daughter cell inherits one centrosome, containing two structures called centrioles. The centrosome replicates during the S phase of the cell cycle. During the prophase in the process of cell division called mitosis, the centrosomes migrate to opposite poles of the cell. The mitotic ...
The surface of the cell shines like glass when clean due to being extremely smooth with no texture. Valonia ventricosa is among the largest known single-celled organisms. Its thallus consists of a thin-walled, tough, multinucleate cell with a diameter that ranges typically from 1 to 4 centimetres (0.4 to 1.6 in), although it may achieve a ...
A major rockslide prompted two highways to be shut down in Colorado over the weekend and witnesses captured the frightening moment on video. Highways 96 and 165 from Wetmore to Westcliffe in ...
Hundreds of prisoners in California are helping battle the LA wildfires. Some earn $26.90 per 24-hour shift, or just over $1 an hour.
Scarlett Johansson has a new gig!. The Black Widow star will be joining Jenna Bush Hager on Today with Jenna & Friends as a guest co-host, beginning Monday, Jan. 20, Bush Hager tells PEOPLE ...
Ocular dominance columns are stripes of neurons in the visual cortex of certain mammals (including humans [1]) that respond preferentially to input from one eye or the other. [2] The columns span multiple cortical layers , and are laid out in a striped pattern across the surface of the striate cortex (V1).
Jill Jacobson, a star of film and TV known for her work in Star Trek: The Next Generation and the soap operas Falcon Crest and Days of Our Lives, has died.She was 70 years old. Jacobson's friend ...