The body consists of many types of specialised cells, from gametes to blood cells, each different cell type having a specific function. In contrast to specialised cells are unspecialised cells, known as stem cells. Because of the unique abilities of stem cells as opposed to a typical somatic cell, they are currently the target of ongoing research. Multiple areas of research are looking into how stem cells can offer new ways of treating disease, such as diabetes or heart disease – a field of medicine known as cell-based therapy or regenerative medicine.
Insulin resistance is a subnormal biological response of the body to insulin, i.e. a reduced reduced response to the presence of insulin. As a result insulin becomes less effective at reducing blood sugar, increased blood sugar levels can have an adverse impact on health.
Phenylketonuria (PKU) became a recognised clinical condition in 1934 when Norwegian physician Ivar Asbjørn Følling identified a link between mental retardation and elevated levels of phenylalanine (hyperphenylalaninemia). The elevated levels of phenylalanine (Phe) was a recognised consequence of a deficiency of the enzyme phenylalanine hydroxylase (PAH).
The simplistic predator-prey model dictates the only effect on prey numbers (by predation) is the direct level of predation which occurs i.e. the number of prey a predator consumes. However, prey can respond to the presence of predators in their vicinity by altering their morphological responses or their behaviour. This normally occurs as an attempt [...]
About The Author - http://ruthturner.wordpress.com My name is Ruth Turner and I am studying BSc (Hons) Animal Management (Animal Behaviour and Welfare) at the University of Chester. My degree gives me a vast knowledge about exotic and pet species, ranging from reptiles to large carnivores, livestock and domestic species. My main interest [...]
Traditional meat inspection, which is still practiced in abattoirs today, was first developed during the 1880s. It was created to detect diseases such as trichinellosis, tuberculosis and taeniasis all of which were endemic at the time (Blackmore 1986). By detecting such diseases, it was possible to remove objectionable meat from the human food chain, thus protecting the public from toxic or infectious hazards. Since that time however, the method of meat inspection has changed little and it is only during recent years that the traditional methods are being scrutinised.
Extra pair paternity occurs when the female of a partner of a pair bonded couple engages in extra pair copulations (i.e. copulation with a male other than the bonded male) and as a result gives birth to offspring whose father is not the bonded male.
The Túngara frog is a tropical species of frog, upon which many mate choice studies have been performed. The male Túngara frog has a characteristic ‘whine-chuck’ mating call which has been exploited in these studies.
Polygynous mammalian mating systems are quite diverse, varying in how females and territories are guarded, as well as the uses of resources amongst other things. Only around 5% of mating systems in mammals are monogamous.
Male ejaculates are able to modify female behaviour in advantageous ways, often increasing male fitness. This is particularly beneficial to species where the sperm from the last male takes precedence.
In general terms, the sexes within a species may be either competitive (i.e. compete against intrasexually for access to a resource, which is in this case, the opposite sex) or choosy. The ‘choosy’ sex therefore makes a decision about which member of the opposite sex he or she will mate with.
Virulence is the ability of a microorganism to produce disease. Virulence depends on the number of infecting bacteria, their route of entry into the body, the response of the host immune system and any characteristics specific to that bacteria.
M. haemolytica is responsible for causing contagious bovine pleuropneumonia, a bacterial disease which causes pneumonia and inflammation of the lung membranes and Bordetella bronchiseptica is an evolutionary progenitor of B. pertussis and is one of the organisms responsible for causing kennel cough in dogs.
The generic purpose of an antibiotic is to prevent the growth and/or survival of invading organisms whilst causing minimal damage and toxicity to the host. The typical mechanism of antibiotic action involves targeting specific enzymes or substrates of the invading bacterial species.
Welcome to VetSciWe have a wide range of articles for you to access, including a number of veterinary, biological and medical science topics. If you can't find what you're looking for try the search bar! Subscribe to our newsletter
Search the Web
December 2013 M T W T F S S « May 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Tagsadhesin animal antibiotic antibody antigen avian bacteria behaviour bird blood bordetella bronchiseptica canine capsule cell diagnosis disease egg enzyme evolution female fish foraging gametes gene glucose hamilton immunity inflammation maynard smith mutation oxygen parasite parental investment prevention prostaglandin protection reproduction resistance secretion signal transduction sperm staphylococcus toxicity treatment tumour