Cells

Some articles on cells, cell:

Sponge - Distinguishing Features
... that have water intake and outlet openings connected by chambers lined with choanocytes, cells with whip-like flagella ... can remold their bodies, as most types of their cells can move within their bodies and a few can change from one type to another ... of a non-living jelly-like mass sandwiched between two main layers of cells ...
Sponge - Vital Functions - "Immune" System
... In a few marine species, gray cells play the leading role in rejection of foreign material ... When invaded, they produce a chemical that stops movement of other cells in the affected area, thus preventing the intruder from using the sponge's internal transport systems ... If the intrusion persists, the grey cells concentrate in the area and release toxins that kill all cells in the area ...
Sponge - Vital Functions - Reproduction - Sexual
... generally acquires a yolk by consuming "nurse cells" ... There are four types of larvae, but all are balls of cells with an outer layer of cells whose flagellae or cilia enable the larvae to move ... Most of the cells transform into archeocytes and then into the types appropriate for their locations in a miniature adult sponge ...
Pseudopodia
... "feet") are temporary projections of eukaryotic cells ... Cells that possess this faculty are generally referred to as amoeboids ... Filaments near the cell's end interact with myosin which causes contraction ...
Cerebellum - Structure - Compartmentalization
... of compartmental structure came from studies of the receptive fields of cells in various parts of the cerebellum cortex ... A microzone is defined as a group of Purkinje cells all having the same somatotopic receptive field ... Microzones were found to contain on the order of 1000 Purkinje cells each, arranged in a long, narrow strip, oriented perpendicular to the cortical folds ...

Famous quotes containing the word cells:

    They are sworn enemies of lyric poetry.
    In prison they accompany the jailer,
    Enter cells to hear confessions.
    Their short-end comes down
    When you least expect it.
    Charles Simic (b. 1938)