(n.) A class of objects divided into several subordinate species; a class more extensive than a species; a precisely defined and exactly divided class; one of the five predicable conceptions, or sorts of terms.
(n.) An assemblage of species, having so many fundamental points of structure in common, that in the judgment of competent scientists, they may receive a common substantive name. A genus is not necessarily the lowest definable group of species, for it may often be divided into several subgenera. In proportion as its definition is exact, it is natural genus; if its definition can not be made clear, it is more or less an artificial genus.
Example Sentences:
(1) The genome characterization of the typing strains for all 13 species of the genus Staphylococcus, included into the Approval List of the Names of Bacterial (1980), is presented.
(2) The genus Streptomyces was dominant in the two studied localities.
(3) The compounds favored the development of bacteria of the genus Pseudomonas and inhibited the growth of all other gram-negative bacteria.
(4) Organisms of the genus Bacteroides represent the major group of obligate anaerobes involved in human infections.
(5) The 212 strains of this proposed subserovar examined to date display biochemical and serological properties typical of the species, are sensitive to the genus-specific bacteriophage, and cause keratoconjunctivitis in the Sereny test.
(6) The new species has been placed in a new genus and the name Tricornia muhezae proposed.
(7) Although differing somewhat in their responses to various biochemical and biophysical tests, all strains were assigned to the genus Flavobacterium.
(8) Ten TBT-resistant isolates from estuarine sediments and 19 from freshwater sediments were identified to the genus level.
(9) A new genus of actinomycetes, Excellospora Agre a. Guzeva gen. nov., is suggested on the basis of this study.
(10) A new genus of spirochaetes, Hollandina, is also described.
(11) The first group consisted of all strains belonging to L. interrogans and serovar andamana of L. biflexa; the second group consisted of the remaining 5 serovars of L. biflexa; the third group consisted of the genus Leptonema; and the fourth group consisted of only L. parva.
(12) The reservosomes of Trypanosoma spp., sub-genus Schizotrypanum, could be differentiated from the multivesicular bodies of other trypanosomatids, since they lack true vesicles.
(13) Statistical analysis of 251 phylogenetically informative nucleotide positions rejects the "volvocine lineage" hypothesis, which postulates a monophyletic evolutionary progression from unicellular organisms (such as Chlamydomonas), through colonial organisms (e.g., Gonium, Pandorina, Eudorina, and Pleodorina) demonstrating increasing size, cell number, and tendency toward cellular differentiation, to multicellular organisms having fully differentiated somatic and reproductive cells (in the genus Volvox).
(14) In all cases, the determinants of the killer trait are carried by obligate bacterial endosymbionts belonging to the genus Caedibacter.
(15) Lastly, the CVA indicated major differences across the genus to be located in the teeth and jaws, suggesting diet might be an important distinguishing feature in Colobus.
(16) Another pigment 7 was specifically present in the skin of genus Rhacophorus and was deduced to be a pteridine derivative composed of five molecules of pterin-6-carboxylic acid [1].
(17) Bacteria of the genus Thiobacillus can obtain energy from the chemolithotrophic oxidation of inorganic sulphur and its compounds (sulphide, thiosulphate and polythionates) and use this energy to support autotrophic growth on carbon dioxide.
(18) A platelet-aggregating activity was found in many snake venoms, predominantly those of the genus Bothrops, that is apparent only in the presence of the platelet-aggregating von Willebrand factor of plasma.
(19) Sporobolomyces yuccicola is the sixth species of the intermedius group, a group of atypical species of the genus Sporobolomyces equipped with Q-9.
(20) This reduction was confined to strict anaerobes, mainly the genus Eubacterium and Bifidobacterium.
Subfamily
Definition:
(n.) One of the subdivisions, of more importance than genus, into which certain families are divided.
Example Sentences:
(1) NH2-terminal sequence analysis of the first 16 residues of P-450THC suggests that it is a member of the P-450IIC subfamily, because its sequence is 85 and 69% identical to published sequences of rat hepatic P-450IIC7 and P-450IIC6, respectively.
(2) The method was used for the purification of DNA from several members of the Alfaherpesvirinae subfamily.
(3) These data imply that chymase activity in the cytotoxic granules is important for cytolytic function and is likely to belong to a new subfamily of serine proteinases.
(4) As regards inhibition, on the other hand, there is now considerable information available which indicates that omeprazole has the potential to partly inhibit the metabolism of drugs metabolised to a great extent by the cytochrome P450 enzyme subfamily IIC (diazepam, phenytoin), but not of those metabolised by subfamilies IA (caffeine, theophylline), IID (metoprolol, propranolol) and IIIA (cyclosporin, lidocaine, quinidine).
(5) This implies that all of these neurotransmitter transporters may have evolved from a common ancestral gene that diverged into the GABA, glycine and catecholamine subfamilies at nearly the same time.
(6) These two human viruses coming from different retrovirus subfamilies may be pathogenic because of this lack of sensitivity to human complement components.
(7) As for the subfamilies of vertebrate integrins, the same beta-subunit is found in both Drosophila PS integrins, combined with a specific alpha-subunit to generate either a complete functional PS1 or PS2 integrin.
(8) The bovine immunodeficiency-like virus (BIV) is morphologically, serologically, and genetically related to the lentivirus subfamily of retroviruses which includes human and simian immunodeficiency viruses and other lentiviruses causally associated with debilitating diseases of domestic animals.
(9) Sequence comparison demonstrated that this gene subfamily is the human counterpart of the putative rat olfactory receptors cloned recently.
(10) Subfamilies II and III are expressed in both male and female antennae, appear to associate with general-odorant-sensitive neurons, and are highly conserved when compared among species.
(11) The ratio of the number of clones isolated over the total number screened reveals a high level of complexity for this subfamily of GTP-binding proteins.
(12) Hence, the family Eimeriidae is suggested to be divided into two subfamilies: Eimeriinae Wenyon, 1926 with Eimeria as the type genus and Isosporinae Wenyon, 1926 with Isospora, Toxoplasma, Besnoitia, Sarcocystis, Frenkelia and Hammondia.
(13) We report the isolation of a clone (pTR9) from a human chromosome 21 lambda phage library, which was found to contain two distinct components: (1) a previously unreported subfamily of human satellite III (pTR9-s3; 1,485 bp) and (2) an alpha satellite sequence (pTR9-alpha; 250 bp) containing 1.5 copies of a 171-bp alphoid unit that shows 88.4% homology to a previously reported alpha satellite consensus sequence.
(14) Further, these studies have helped to identify a new member of the PSG gene subfamily (PSG7).
(15) of the subfamily Ponerinae, which is not a harvester ant.
(16) An analogous situation has been described for a related but distinct subfamily shared by chromosomes 13 and 21.
(17) In microsomes from untreated rats with the predominant cytochrome P450IIA1 subfamily as well as in microsomes from isopropanol treated rats (induction of cytochrome P450IIE1) which catalyse only lonazolac hydroxylation to a detectable amount, the latter reaction was inhibited by pantoprazole with a somewhat lower Ki of 77 whereas the values for omeprazole and lansoprazole remained unchanged in comparison to those found in microsomes from phenobarbital pretreated rats.
(18) Clotrimazole, an imidazole antifungal drug, is known to induce cytochrome P450 isozymes of the P450IIIA and P450IIB subfamilies in rats.
(19) Of these IFNs, the trophoblast interferons, oTP-1 and bTP-1, are clearly the most well characterized and have been found to be members of an unusual 172-amino-acid-long IFN-alpha subfamily.
(20) These two subfamilies were further shown not to be present on the homologous chimpanzee chromosomes and therefore must have arisen by rearrangement of the human genome after separation of the two species.