What's the difference between cytogenesis and formation?
Cytogenesis
Definition:
(n.) Development of cells in animal and vegetable organisms. See Gemmation, Budding, Karyokinesis; also Cell development, under Cell.
Example Sentences:
(1) At about E31, the last day of gestation, the laminar structure of the retina begins to mature, cytogenesis begins to cease and the outer plexiform layer starts to form.
(2) A detailed consideration of their shared and differing cytological features suggests that the various blood cells represent different stages of cytogenesis along a common or single path of cellular differentiation.
(3) While current views of the incidence, histology, and cytogenesis are presented, the main purpose of this article is to call attention to the identifying clinical and radiological characteristics of these spinal tumors.
(4) Prior applications of BUdR for studies of cytogenesis in the CNS have been extended in two principal ways: (1) basic fuchsin was used as counterstain for BUdR-negative nuclei and (2) labelling indices were determined separately in strata or bins, 10 microns in height, through the full depth of the ventricular zone and overlying cerebral wall.
(5) The mechanism underlying cytogenesis in the adrenal cortex of ACTH-treated rats was investigated.
(6) They may be associated with the neck stem cells in the cytogenesis of gastric adenomas.
(7) The Type C cytogenesis of Aschoff cells takes place through direct transformation of cardiac muscle fibers which show central hyalinization of myoplasm and changes in nuclei from normal to single or multinucleated large vesicular forms.
(8) These findings may support the theory of the combination tumor as the cytogenesis of mixed mesodermal tumor of the ovary; they also suggest the conversion of carcinomatous cells to sarcomatous cells.
(9) Cytogenesis ceases in this layer after the first postnatal week.
(10) This heterogeneity of the histochemical properties of tumour cells is discussed with regard to the role of the stem (polypotent) cell in the process of the histogenesis (cytogenesis) of human gastric carcinomas.
(11) At the ages studied, the progeny of Stage 1 cytogenesis are distributed in an annulus toward the margin of the retina, and those of Stage 2 occur central to the annulus, indicating that Stage 2 follows Stage 1.
(12) The cytogenesis of the perineurium remains disputable, with morphologic, immunohistochemical, and experimental evidence supporting origin from the fibroblast, Schwann cell, and arachnoid cap cell.
(13) The results support the migration hypothesis of adrenocortical cytogenesis.
(14) Although the cytogenesis of null cell adenomas and oncocytomas is not clear, it can be suggested that these two tumor types are derived from a pluripotential precursor cell that is capable of undergoing multidirectional differentiation and synthesizing various hormones, mainly glycoproteins.
(15) Developmental events beginning here include the formation of cell-free channels at the vitreal margin; the appearance of the first ganglion cells and their axons; the formation of continuous inner and outer plexiform layers; the differentiation of cells in the ganglion cell, inner, and outer nuclear layers; and the cessation of cytogenesis at the outer limiting membrane.
(16) The cytomorphology and cytogenesis of BK virus-transformed hamster brain cells (HBBK cells) were studied.
(17) The demonstration of a well-characterized, cell type-specific marker in a tumor reflects not so much its cytogenesis as its differentiation potential and its capacity for metaplasia.
(18) Until the cytogenesis of PTC is clarified we propose the noncommitted term "plasmacytoid T-zone cells" for this elusive cell type.
(19) Following hypotheses have been postulated on the cytogenesis of intramedullary schwannoma in the literature: Central displacement of Schwann cells during embryonic development.
(20) The noradrenergic (NA) innervation of the rat hippocampal formation arrives embryonically into a structure in which cytogenesis and cell migration are still active processes.
Formation
Definition:
(n.) The act of giving form or shape to anything; a forming; a shaping.
(n.) The manner in which a thing is formed; structure; construction; conformation; form; as, the peculiar formation of the heart.
(n.) A substance formed or deposited.
(n.) Mineral deposits and rock masses designated with reference to their origin; as, the siliceous formation about geysers; alluvial formations; marine formations.
(n.) A group of beds of the same age or period; as, the Eocene formation.
(n.) The arrangement of a body of troops, as in a square, column, etc.
Example Sentences:
(1) Since fingernail creatinine (Ncr) reflects serum creatinine (Scr) at the time of nail formation, it has been suggested that Ncr level might represent that of Scr around 4 months previously.
(2) The influence of the various concepts for the induction of lateral structure formation in lipid membranes on integral functional units like ionophores is demonstrated by analysing the single channel current fluctuations of gramicidin in bimolecular lipid membranes.
(3) Because cystine in medium was converted rapidly to cysteine and cysteinyl-NAC in the presence of NAC and given that cysteine has a higher affinity for uptake by EC than cystine, we conclude that the enhanced uptake of radioactivity was in the form of cysteine and at least part of the stimulatory effect of NAC on EC glutathione was due to a formation of cysteine by a mixed disulfide reaction of NAC with cystine similar to that previously reported for Chinese hamster ovarian cells (R. D. Issels et al.
(4) The second amino acid residue influences not only the rate of reaction but also the extent of formation of the product of the Amadori rearrangement, the ketoamine.
(5) The purpose of these studies was to better understand the molecular basis of chromosome aberration formation after mitomycin C treatment.
(6) Together these observations suggest that cytotactin is an endogenous cell surface modulatory protein and provide a possible mechanism whereby cytotactin may contribute to pattern formation during development, regeneration, tumorigenesis, and wound healing.
(7) Past imaging techniques shown in the courtroom have made the conventional rules of evidence more difficult because of the different informational content and format required for presentation of these data.
(8) Electron spin resonance studies indicate the formation of two vanadyl complexes that are 1:1 in vanadyl and deferoxamine, but have two or three bound hydroxamate groups.
(9) When the eye was dissected into anterior uveal, scleral, and retinal complexes, prostaglandin D2 was formed in the highest degree in all the complexes, whereas prostaglandin E2 and F2 alpha formation was specific to given ocular regions.
(10) In the case presented, overdistension of a jejunostomy catheter balloon led to intestinal obstruction and pressure necrosis (of the small bowel), with subsequent abscess formation leading to death from septicemia.
(11) The disassembly of the synthetase complex is consistent with the structural model of a heterotypic multienzyme complex and suggests that the complex formation is due to the specific intermolecular interactions among the synthetases.
(12) Chloroquine induced large cytoplasmic vacuoles, whereas the other drugs (quinacrine, 4,4'-diethylaminoethoxyhexestrol, chlorphentermine, iprindole, 1-chloro-amitriptyline, clomipramine) caused formation of lamellated or crystalloid inclusions as usually seen in drug-induced lipidosis.
(13) Immunohistochemical observation of myoepithelial cells with monoclonal antibody from human mammalian cancer suggested that these cells play an important role in the process of glandular ducts formation.
(14) This value is about 30 times higher than the association constant for guanine-cytosine base pair formation under the same experimental conditions.
(15) Anti-human factor V IgG decreased this enhanced thrombin formation in the presence of platelets, indicating that factor V from platelets was playing an important role in thrombin formation.
(16) Aside from these characteristic findings of HCC, it was important to reveal the following features for the diagnosis of well differentiated type of small HCC: variable thickening or distortion of trabecular structure in association with nuclear crowding, acinar formation, selective cytoplasmic accumulation of Mallory bodies, nuclear abnormalities consisting of thickening of nucleolus, hepatic cords in close contact with bile ducts or blood vessels, and hepatocytes growing in a fibrous environment.
(17) Natural tubulin polymerization leads to the formation of hooks on microtubular structures.
(18) The reducing equivalents could be donated by formate or NADH through some segment of the membrane respiratory chain.
(19) This method, which permits a more rapid formation of anastomoses, has been used to form Roux-en-Y jejunojejunostomies without extensive complications in six patients.
(20) It was concluded that the spheno-occipital complex has a close relationship to the skeletal facial pattern and contributes to the facial formation.