(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.
Tsetse
Definition:
(n.) A venomous two-winged African fly (Glossina morsitans) whose bite is very poisonous, and even fatal, to horses and cattle, but harmless to men. It renders extensive districts in which it abounds uninhabitable during certain seasons of the year.
Example Sentences:
(1) One hundred and forty six calving interval records were built up from 64 N'Dama cows maintained for 3.5 years under a high natural tsetse challenge in Zaire.
(2) "Decoding the tsetse fly's DNA is a major scientific breakthrough.
(3) Studies of activity levels indicate that tsetse flies should aggregate in damp situations where the activity levels is minimal, whereas in practice the flies are distributed throughout the whole of gradient.
(4) Injection of tsetse homogenates into teneral G. m. morsitans prior to exposure to trypanosome-infected feed increased T. b. brucei infections in the flies significantly.
(5) Seasonal changes in the mean size of tsetse, Glossina pallidipes Austen, as indicated by wing vein length, were monitored during 1983-86 at Nguruman, southwestern Kenya.
(6) Cultures thus established were infective to rats and tsetse flies.
(7) The acquisition of the variant surface glycoprotein (variable antigen) coat by metacyclic stage Trypanosoma brucei in the salivary glands of the tsetse fly, Glossina morsitans, has been studied in situ by transmission and scanning electron microscopy using monoclonal antibodies raised against metacyclic variable antigen types and complexed with horseradish peroxidase or colloidal gold.
(8) The utility of recombinant DNA probes in the detection of natural trypanosome infection of tsetse flies has been assessed in Lambwe Valley, near the shores of Lake Victoria, Kenya.
(9) The spectrum of the sounds produced by the tsetse fly Glossina morsitans morsitans extends to above 80 kHz and the energy distribution between 20 and 70 kHz is related to behavior.
(10) These laboratory bioassay findings agree with field observations on tsetse responses to certain chemical odours.
(11) Relationships were evaluated between trypanosome infection as measured by antigen detection enzyme immunoassays (antigen ELISA), anaemia as determined by average packed red cell volume (PCV), and animal performance as assessed by daily weight gain in 99 N'Dama cattle in Gabon exposed to natural tsetse challenge at 11.5 months of age and recorded 14 times over a 13 week period.
(12) During an outbreak of Rhodesian sleeping sickness in the Lambwe Valley in 1980 initial tsetse control measures consisted of applications of dieldrin to the periphery of the Ruma National Park.
(13) Through a systematic health education programme, people are actively involved in making and setting traps and in learning about the general characteristics of the tsetse fly and the disease.
(14) monoclonal antibodies), large trypanosome stock collections and the measurement of parameters such as virulence, tsetse transmissibility etc.
(15) Its low cost and the possibility for the farmer to soak themselves the trap with insecticide allow to consider its use for large-scale control of tsetse flies in the forest zones by rural communities.
(16) In the present study, we demonstrate that lymph node cells from cattle infected with T. congolense through tsetse fly challenge were unable to proliferate in vitro following activation with the T-cell mitogen Concanavalin A.
(17) rhodesiense has yielded a lot of information which suggests that these trypanosomes are a sub-set of the stocks circulating in tsetse and non human hosts and that each focus constitutes a separate set of human infective stocks.
(18) Its simple and robust construction makes this trap ideally suitable for the large scale control of tsetse flies.
(19) Light and electron microscope investigations were carried out on the infection with Trypanosoma (Nannomonas) congolense of laboratory-reared tsetse flies Glossina pallidipes.
(20) Tests were also made on 12 lines (clones) of a stabilate of polymorphic trypanosomes isolated from tsetse flies.