About Thromboxane

Thromboxane is a member of the family of lipids known as eicosanoids. The two major thromboxanes are thromboxane A2 and thromboxane B2. The distinguishing feature of thromboxanes is a 6-membered ether-containing ring.
Thromboxane is named for its role in clot formation (thrombosis).
It is a vasoconstrictor and a potent hypertensive agent, and it facilitates platelet aggregation.It is in homeostatic balance in the circulatory system with prostacyclin, a related compound. The mechanism of secretion of thromboxanes from platelets is still unclear.
It is believed that the vasoconstriction caused by thromboxanes plays a role in Prinzmetal's angina. Omega-3 fatty acids have higher levels of TxA3 which is relatively less potent than TxA2 and PGI3; therefore, there is a balance shift toward vasoconstriction and platelet aggregation inhibition. It is believed that this shift in balance lowers the incidence of myocardial infarction and stroke.

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The introductions of growth medium

A growth medium or culture medium is a liquid or gel designed to support the growth of microorganisms or cells,or small plants like the moss Physcomitrella patens.There are different types of media for growing different types of cells.There are two major types of growth media: those used for cell culture, which use specific cell types derived from plants or animals, and microbiological culture, which are used for growing microorganisms, such as bacteria or yeast. The most common growth media for microorganisms are nutrient broths and agar plates; specialized media are sometimes required for microorganism and cell culture growth.Some organisms, termed fastidious organisms, require specialized environments due to complex nutritional requirements. Viruses, for example, are obligate intracellular parasites and require a growth medium containing living cells.

Differential medium or indicator medium distinguish one microorganism type from another growing on the same media.[5] This type of media uses the biochemical characteristics of a microorganism growing in the presence of specific nutrients or indicators (such as neutral red, phenol red, eosin y, or methylene blue) added to the medium to visibly indicate the defining characteristics of a microorganism. This type of media is used for the detection of microorganisms and by molecular biologists to detect recombinant strains of bacteria.

Examples of differential medium include:
eosin methylene blue (EMB), which is differential for lactose and sucrose fermentation .
MacConkey (MCK), which is differential for lactose fermentation .
mannitol salt agar (MSA), which is differential for mannitol fermentation .
X-gal plates, which are differential for lac operon mutants .

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