noun
definition
Any of a group of protozoan parasites which are transmitted by biting insects and infect the blood of humans and other vertebrates.
Examples of trypanosome in a Sentence
Nevertheless, the fact, commented upon by several observers, that even here an infected fly is only infectious for a comparatively short period suggests that this species of fly, at any rate, is not the true alternate host in which the life-cycle of that particular Trypanosome is completed.
The first observation of a trypanosome is usually ascribed to Valentin (55), who in 1841 announced his discovery of certain amoeboid parasites in the blood of a trout.
The main features of trypanosomosis, or illness caused by a Trypanosome, show a general agreement, whichever variety is considered; one symptom may be, of course, more marked than another in any particular case.
A Trypanosome always possesses two distinct nuclear bodies, one the trophonucleus, regulating the trophic life of the cell, the other, the kinetonucleus, directing its locomotor activities.
According to Schaudinn's account, he was dealing with two separate Trypanosome parasites of the Little Owl (Athene noctua), viz.
The male gametes, it may be noted, are said to possess the essential characters of a Trypanosome.
The development of an indifferent ookinete into, an indifferent Trypanosome is shown in fig.
Brumpt (5a), Leger (32, 33), Keysselitz (16), Prowazek (47), Minchin (41b) and others - has undoubtedly shown that much of Schaudinn's scheme of the life-history of a Trypanosome is well-founded.
Certain individuals of a particular character form definite rounded cysts in the rectum of the fly; in this condition, the only sign of Trypanosome structure is afforded by the two nuclei, which remain separate.
The larger nuclear body, which corresponds to the trophonucleus of a Trypanosome, is usually round or oval; the smaller one, representing a kinetonucleus, has the form either of a little rod or of a round grain, and is generally separate from the larger nucleus.
Nevertheless, the general appearance and structure of these motile forms so greatly resemble that of a Herpetomonad, or of the " pseudo-Herpetomonadine " forms of a Trypanosome which are obtained in cultures, that it cannot be doubted that the " Leishman-Donovan-Wright " bodies are closely connected with the Haemoflagellates.
We would like to better understand how the dense VSG coat protects the trypanosome from complement mediated lysis.
The parasite that causes sleeping sickness is called the trypanosome.
Expression of a novel, rapidly evolving gene family in the bloodstream form of a pathogenic African trypanosome.
The bloodstream form trypanosome is therefore continuously balancing on the brink of destruction.
The " carrier " of a Trypanosome of warmblooded vertebrates is, in all instances so far described, an insect, generally a member of the Diptera; in the case of parasites of cold-blooded vertebrates the same role is usually played by an ichthyobdellid leech (piscine forms), but possibly, now and again, by an Ixodes (amphibian or reptilian forms).
The trypanosome life cycle in the fly is regulated by symbiotic bacteria in its gut into which it is possible to insert foreign genes.
Researchers produced cloned populations of two trypanosome stocks with induced Suramin resistance.
Caused by the trypanosome parasite Trypanosoma brucei rhodesiense, which is carried by the tsetse fly, the disease is fatal if not treated.
We also exploit a wide range of assays and functional studies to determine the precise role that the protein plays in trypanosome biology.
The disease is caused by a parasite called Trypanosome brucei.
A Trypanosome usually produces markedly harmful effects upon gaining an entry into animals which have never been, by their distribution, liable to its invasion previously.