| hospitals, teaching | Hospitals engaged in educational and research programs, as well as providing medical care to the patients. (12 Dec 1998) |
|---|---|
| hospitals, university | Hospitals maintained by a university for the teaching of medical students, postgraduate training programs, and clinical research. (12 Dec 1998) |
| hospitals, urban | Hospitals located in metropolitan areas. (12 Dec 1998) |
| hospitals, veterans | Hospitals providing medical care to veterans of wars. (12 Dec 1998) |
| hospitals, voluntary | Private, not-for-profit hospitals that are autonomous, self-established, and self-supported. (12 Dec 1998) |
| host | An organism that is infected with or is fed upon by a parasitic or pathogenic organism (for example, a virus, nematode, fungus). The term can also be applied, loosely, to a plant supporting an epiphyte. (09 Oct 1997) |
| host cell | A cell which has been infected by a virus is known as the host cell of that virus. A cell which is used in lab techniques such as DNA cloning to receive, maintain, and allow the reproduction of recombinant DNA cloning vectors. The DNA introduced with the vector is replicated whenever the cell divides and the recombinant proteins encoded for by the plasmid are reproduced in large quantities. (13 Nov 1997) |
| host range | The range of host species or cell types which a particular virus, bacteria, or parasite is able to infect or parasitise. (09 Oct 1997) |
| host range mutant | A mutant of phage or animal virus that grows normally in one of its host cells, but has lost the ability to grow in cells of a second host type. (18 Nov 1997) |
| host restriction-modification | A bacterial system where the bacterium is able to destroy invading DNA from a bacteriophage (virus which infects bacteria) while at the same time preventing the destruction of their own DNA. The phage DNA is cleaved by a restriction enzyme made by the bacterium, the bacterial DNA is modified (usually with methylation) so that the enzyme will not destroy it. (09 Oct 1997) |
| host versus graft reaction | The normal lymphocyte mediated reactions of a host against allogeneic or xenogeneic cells acquired as a graft or otherwise, which lead to damage or/and destruction of the grafted cells. The opposite of graft-versus-host reaction. The common basis of graft rejection. (18 Nov 1997) |
| host vs graft reaction | The immune responses of a host to a graft. A specific response is graft rejection. (12 Dec 1998) |
| host-parasite relations | The interactions between two organisms, one of which lives at the expense of the other. (12 Dec 1998) |
| host-vector system | A combination of a bacterial host cell (i.e. A specific strain) and a virus vector (i.e. A particular bacteriophage strain) which work well together for DNA cloning. (09 Oct 1997) |
| hostel | 1. An inn. "So pass I hostel, hall, and grange." (Tennyson) 2. A small, unendowed college in Oxford or Cambridge. Origin: OE. Hostel, ostel, OF. Hostel, ostel, LL. Hospitale, hospitalis, fr. L. Hospitalis. See Hospital, and cf. Hotel. Source: Websters Dictionary (01 Mar 1998) |