| G0 | quiescent phase of cells leaving the mitotic cycle |
|---|---|
| G1 | presynthetic gap [phase of cells prior to DNA synthesis] |
| G2 | postsynthetic gap [phase of cells following DNA synthesis] |
| GMK | green monkey kidney [cells] |
| HD | Haab-Dimmer [syndrome]; Hajna-Damon [broth]; Hansen disease; hearing distance; heart disease; helix ... |
| haematopoietic stem cells | Progenitor cells from which all blood cells derive. (12 Dec 1998) |
|---|---|
| hair cells | Mechanoreceptors located in the organ of corti that are sensitive to auditory stimuli and in the vestibular apparatus that are sensitive to movement of the head. In each case the accessory sensory structures are arranged so that appropriate stimuli cause movement of the hair-like projections (stereocilia and kinocilia) which relay the information centrally in the nervous system. (12 Dec 1998) |
| hair cells, inner | Bulbous cells that are medially placed in one row in the organ of corti. In contrast to the outer hair cells, the inner hair cells are fewer in number, have fewer sensory hairs, and are less differentiated. (12 Dec 1998) |
| hair cells, outer | Mechanoreceptors in the organ of corti. In mammals the outer hair cells are arranged in three rows which are further from the modiolus than the single row of inner hair cells. The motile properties of the outer hair cells may contribute actively to tuning the sensitivity and frequency selectivity of the cochlea. (12 Dec 1998) |
| hair cells, vestibular | Mechanoreceptors located in the acoustic maculae and the saemicircular canals that mediate the sense of balance, movement, and head position. The vestibular hair cells are connected to accessory structures in such a way that movements of the head displace their stereocilia. This influences the membrane potential of the cells which relay information about movements via the vestibular part of the acoustic nerve to the brainstem. (12 Dec 1998) |
| hairy cells | Medium sized leukocytes that have features of reticuloendothelial cell's and multiple cytoplasmic projections (hairs) on the cell surface, but which may be a variety of B lymphocyte; they are found in hairy cell leukaemia. (05 Mar 2000) |
| pregnancy cells | Hypophysial chromophobe cell's that increase in number and accumulate eosinophil granules during pregnancy. (05 Mar 2000) |
| pregranulosa cells | Capsular cell's surrounding the primordial ova in the embryonic ovary; they are derived from celomic epithelium. (05 Mar 2000) |
| cytomegalic cells | Cell's containing large intranuclear and intracytoplasmic cytomegalic inclusion bodies caused by cytomegalovirus; a member of the family Herpesviridae. (05 Mar 2000) |
| cytotrophoblastic cells | Stem cell's that fuse to form the overlying syncytiotrophoblast of placental villi. Synonym: Langhans' cells. (05 Mar 2000) |
| heart failure cells | Macrophages in the lung during left heart failure that often carry large amounts of haemosiderin. See: siderophore. (05 Mar 2000) |
| prokaryotic cells | Cells, such as those of bacteria and the blue green algae, which lack a nuclear membrane so that the nuclear material is either scattered in the cytoplasm or collected in a nucleoid region. (12 Dec 1998) |
| HEMPAS cells | The abnormal erythrocytes of type II congenital dyserythropoietic anaemia. See: HEMPAS. (05 Mar 2000) |
| satellite cells | Neuroglial cell's surrounding the cell body of a ganglion cell in the spinal, cranial, and autonomic ganglia. (05 Mar 2000) |
| Schultze's cells | Very slender nerve cell's, with large nuclei and surmounted by six to eight long, sensitive cilia in the olfactory epithelium at the roof of the nose; they are the receptors for smell. Synonym: olfactory cells, Schultze's cells. (05 Mar 2000) |