A structural cytoplasmic protein, of a class known as
intermediate filaments, bundles of which together form a
tonofibril; a tonofilament is made up of a variable number of
related proteins, keratins, and is found in all epithelial cells,
but is particularly well developed in the epidermis.
A class of intermediate filaments found in neurons.
A hollow, cylindrical cytoplasmic element, 20–27 nm
in diameter and of variable length, that occurs widely
in the cytoskeleton, cilia, and flagella of cells;
microtubules play a role in the maintenance of cell
shape and increase in number during mitosis and
meiosis, where they are related to movement of the
chromosomes by the nuclear spindle.
A zone of cytoplasm containing one or two centrioles
but devoid of other organelles; usually located near
the nucleus of a cell.
Syn: central body, cell center, centrosome,
cinocentrum, kinocentrum, microcentrum.
نږدې ته هستې
دوه یا یو کې هغه په چې ده برخه یوه
کېږي لیدل نه پکې ارګانیلونه نور خو لري موقعیت سنتریولونه
تبارزات سطحې د حجرې د
projection from the cell surface
کیږي لیدل سره شکلونو الندې په تبارزات دا
immotile cilia syndrome:
an inherited disorder characterized by:
1- recurrent sinopulmonary infections,
2- reduced fertility in women,
3- sterility in men.
due to the inability of ciliated structures to beat
effectively because of the absence of one or both
dynein arms; autosomal recessive inheritance.
Brown pigment granules representing lipid-containing
residues of lysosomal digestion and considered one of
the aging or “wear and tear” pigments; found in liver,
kidney, heart muscle, adrenal, and ganglion cells.