(n.) Any plant of the order Cactacae, as the prickly pear and the night-blooming cereus. See Cereus. They usually have leafless stems and branches, often beset with clustered thorns, and are mostly natives of the warmer parts of America.
Example Sentences:
(1) In February last year the BBC was forced to apologise to the Mexican ambassador after a joke made by the three presenters that the nation's cars were like the people "lazy, feckless, flatulent, overweight, leaning against a fence asleep looking at a cactus with a blanket with a hole in the middle on as a coat".
(2) It's an extraordinary, sprawling world, powered by magic and steampunk technology, populated by humans, cactus-people, insectoid, amphibian and avian races, dripping with myths and monsters and menaced by repressive regimes.
(3) 3:28:05 New York Tracon: "Cactus 1529, if we can get it to you, do you want to try to land runway 1-3?"
(4) Agurell has previously detected (tlc, glc-ms) tyramine, 3-methoxytyramine, and two unknown alkaloids in the Peruvian cactus, Trichocereus peruvianus Br.
(5) 3:29:21 New York Tracon: "Cactus 1529, turn right 2-8-0, you can land runway one at Teterboro."
(6) 3:31:30 Unknown: "Was that cactus up by the Tappan Zee?"
(7) Her autopsy findings were characteristic of the damage to an immature brain during development; cactus formation of cerebellar cortex and periventricular leukomalacia.
(8) One is how, when parachuted behind enemy lines, he landed on a cactus bush and was horribly injured.
(9) 3:31:32 New York Tracon: "Uh, yeah, it was a cactus.
(10) Here we show that in contrast to the dorsal group genes, the maternal gene cactus acts as a negative regulator of the nuclear localization of the dorsal protein.
(11) In between come the honky-tonk towns of Texas, the cactus-studded desert of New Mexico and Arizona, and the dunes and mountain passes of California.
(12) The cactus alkaloid 3,4-dimethoxyphenethylamine and its naturally occurring N-methylated homologs inhibited the deamination of tyramine and tryptamine by rat brain monoamine oxidase.
(13) Coca-Cola, cactus and flight safety manual illustrations form the basis of the kitsch prints.
(14) Crystal Fairy & the Magical Cactus Facebook Twitter Pinterest The title of this psychedelic road trip extravaganza gives a good idea of the drug-fuelled adventures to come.
(15) He blogs at DC's Improbable Science Response on behalf of the CACTUS Study research team Dr Charlotte Paterson, Peninsula College of Medicine & Dentistry, University of Exeter.
(16) However, embryos still retain dorsoventral polarity, even if derived from germline clones using the strongest available, zygotic lethal cactus alleles.
(17) Ultrasound detected 59 of 60 foreign bodies, including all cubes of meat embedded with gravel, cactus spine, plastic, metal, and wood.
(18) Previous work showed that in cactus mutants more dorsal protein enters the nucleus in dorsal regions, resulting in a ventralized phenotype.
(19) This result implies that cactus acts via dorsal and has no independent morphogen function.
(20) Two patients are described with occupational asthma due to carmine, a natural dye extracted from the insect Coccus cactus.
Stem
Definition:
(v. i.) Alt. of Steem
(n.) Alt. of Steem
(n.) The principal body of a tree, shrub, or plant, of any kind; the main stock; the part which supports the branches or the head or top.
(n.) A little branch which connects a fruit, flower, or leaf with a main branch; a peduncle, pedicel, or petiole; as, the stem of an apple or a cherry.
(n.) The stock of a family; a race or generation of progenitors.
(n.) A branch of a family.
(n.) A curved piece of timber to which the two sides of a ship are united at the fore end. The lower end of it is scarfed to the keel, and the bowsprit rests upon its upper end. Hence, the forward part of a vessel; the bow.
(n.) Fig.: An advanced or leading position; the lookout.
(n.) Anything resembling a stem or stalk; as, the stem of a tobacco pipe; the stem of a watch case, or that part to which the ring, by which it is suspended, is attached.
(n.) That part of a plant which bears leaves, or rudiments of leaves, whether rising above ground or wholly subterranean.
(n.) The entire central axis of a feather.
(n.) The basal portion of the body of one of the Pennatulacea, or of a gorgonian.
(n.) The short perpendicular line added to the body of a note; the tail of a crotchet, quaver, semiquaver, etc.
(n.) The part of an inflected word which remains unchanged (except by euphonic variations) throughout a given inflection; theme; base.
(v. t.) To remove the stem or stems from; as, to stem cherries; to remove the stem and its appendages (ribs and veins) from; as, to stem tobacco leaves.
(v. t.) To ram, as clay, into a blasting hole.
(v. t.) To oppose or cut with, or as with, the stem of a vessel; to resist, or make progress against; to stop or check the flow of, as a current.
(v. i.) To move forward against an obstacle, as a vessel against a current.
Example Sentences:
(1) However, CT will be insensitive in the detection of the more cephalic proximal lesions, especially those in the brain stem, basal cisterns, and skull base.
(2) Based on our results, we propose the following hypotheses for the neurochemical mechanisms of motion sickness: (1) the histaminergic neuron system is involved in the signs and symptoms of motion sickness, including vomiting; (2) the acetylcholinergic neuron system is involved in the processes of habituation to motion sickness, including neural store mechanisms; and (3) the catecholaminergic neuron system in the brain stem is not related to the development of motion sickness.
(3) The examination of the standard waves' amplitude and latency of the brain stem auditory evoked response (BAEP) was performed in 20 guinea pigs (males and females, weighing 250 to 300 g).
(4) A previous trial into the safety and feasibility of using bone marrow stem cells to treat MS, led by Neil Scolding, a clinical neuroscientist at Bristol University, was deemed a success last year.
(5) Proliferation of quiescent hematopoietic stem cells, purified by cell sorting and evaluated by spleen colony assay (CFU-S), was investigated by measuring the total cell number and CFU-S content and the DNA histogram at 20 and 48 hours of liquid culture.
(6) The last stems from trends such as declining birth rate, an increasingly mobile society, diminished importance of the nuclear family, and the diminishing attractiveness of professions involved with providing maintenance care.
(7) Following BHT administration, the alveolar stem cells (type II pneumocytes) proliferate and differentiate according to a biphasic pattern, with proliferative peaks at d 3 and 7.
(8) In testing the contribution of the long, curved stem to the torsional stability of uncemented prostheses by comparing it with other stems, the long, curved stem was the most stable, followed by a shorter straight stem, and a short, proximally curved stem.
(9) For example, stem pairing with a sequence other than wild-type resulted in normal protein binding in vitro but derepression of protein synthesis in vivo.
(10) These results indicate that this population (approximately 0.1% of bone marrow) may contain the pluripotent hematopoietic stem cell.
(11) Brain-stem CBF varied the most but did not correlate with clinical signs of brain-stem dysfunction.
(12) We infer from these results that endotoxin ameliorates the cyclical changes in blood cell counts by regulating hematopoietic proliferative activity at the stem cell level.
(13) The effects of inhibitors of aldehyde dehydrogenase activity on the sensitivity of murine pluripotent hematopoietic stem cells to oxazaphosphorine anticancer agents, e.g.
(14) Three strains of fluorescent pseudomonads (IS-1, IS-2, and IS-3) isolated from potato underground stems with roots showed in vitro antibiosis against 30 strains of the ring rot bacterium Clavibacter michiganensis subsp.
(15) This has stemmed from an inadequate understanding of the mechanisms involved in the formation and propagation of this condition.
(16) We therefore think that the detailed examination of CALLA(-) non-T non-B ALL cells using myeloid specific antibodies is helpful in clarifying the characteristics of myeloid precursors and the common bipotential stem cell of lymphoid and myeloid progenitors.
(17) Imaging studies had shown no change in his brain stem lesion, which at autopsy was found to be a focal collection of fibrillary astrocytes.
(18) These cells were hypothesized to be the stem cells for the corneal epithelium.
(19) Auditory brain stem potentials (ABP) were recorded in 27 patients with Bell's palsy during the early phase of the disease and 1-3 months later.
(20) The results indicate that stimulation of trigeminal subnucleus caudalis, a brain stem region that processes nociceptor afferent information, evokes a prompt increase in plasma ACTH.