- Hfr cells
- the sexual or donor (male) stage of bacteria having the F (fertility) factor in the chromosome, which enables them to transfer chromosomal material to recipient (female) bacteria not having this factor.
Medical dictionary. 2011.
Hfr cells
Look at other dictionaries:
Hfr cell — An hfr cell (also called hfr strain) is a bacterium with a conjugative plasmid (often F) integrated into its genomic DNA. Hfr is the abbreviation for high frequency recombination , which was first characterized by Luca Cavalli Sforza. Unlike a… … Wikipedia
episome — episomal, adj. episomally, adv. /ep euh sohm /, n. Genetics. bacterial DNA that is extrachromosomal and that may replicate autonomously as a plasmid or become incorporated into the chromosome and replicate with it. [1930 35; EPI + SOME3] * * *… … Universalium
Bacterial conjugation — is the transfer of genetic material between bacterial cells by direct cell to cell contact or by a bridge like connection between two cells.[1] Discovered in 1946 by Joshua Lederberg and Edward Tatum,[2] conjugation is a mechanism of horizontal… … Wikipedia
Fertility factor — The Fertility factor (also known as F factor or sex factor) is a bacterial DNA sequence that allows a bacterium to produce a sex pilus necessary for conjugation. It contains 20 tra (for transfer ) genes and a number of other genetic sequences… … Wikipedia
Neutron Capture Therapy of Cancer — Neutron Capture Therapy (NCT) is a noninvasive therapeutic modality for treating locally invasive malignant tumors such as primary brain tumors and recurrent head and neck cancer. It is a two step procedure: first, the patient is injected with a… … Wikipedia
Characters in the Southern Victory series — The Southern Victory series or Timeline 191 is a series of novels written by Harry Turtledove. They form an alternate history of events in the United States based on the premise that the Confederates won the Civil War and became an independent… … Wikipedia
Fictional characters in the Southern Victory Series — The Southern Victory Series is a series of alternate history novels written by Harry Turtledove. The point of divergence involves Confederate States of America winning the American Civil War and becoming an independent nation. The series covers… … Wikipedia
Merozygote — is a state when a cell, usually bacterial, is temporarily diploid as result of DNA transfer processes like conjugation. One example of how merozygotes can be formed is the transfer of genetic material during an HFR transformation. In HFR… … Wikipedia
Folate receptor 1 — (adult), also known as FOLR1, is a human gene.cite web | title = Entrez Gene: FOLR1 folate receptor 1 (adult)| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene Cmd=ShowDetailView TermToSearch=2348| accessdate = ] PBB Summary section title … Wikipedia
Outline of cell biology — Light micrograph of a moss s leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: Cell biology (formerly cytology, from the Greek kytos, container ) – academic discipline that… … Wikipedia
