Tag: Vaccines
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The WHO Task Force on Vaccines for Fertility Regulation
The WHO Task Force on Vaccines for Fertility Regulation a name that sounds like the title of a dystopian novel or the punchline to a conspiracy theorist’s fever dream. But no, this was a real initiative, launched in 1972, with the goal of developing birth control vaccines. Yes, you read that right—vaccines for birth control. Because…
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Maculopapular rash is seen in graft-versus-host disease (GVHD)Â
A maculopapular rash is a type of rash characterized by a flat, red area on the skin that is covered with small confluent bumps. It may only appear red in lighter-skinned people. The term “maculopapular” is a compound: macules are small, flat discolored spots on the surface of the skin; and papules are small, raised bumps. It is also described as erythematous, or red.…
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Ovalbumin
Ovalbumin (abbreviated OVA) is the main protein found in egg white, making up approximately 55% of the total protein. Ovalbumin displays sequence and three-dimensional homology to the serpin superfamily, but unlike most serpins it is not a serine protease inhibitor. The function of ovalbumin is unknown, although it is presumed to be a storage protein. Storage proteins Storage proteins serve as biological reserves of metal ions and amino acids, used by organisms. They…
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Albumen prints and egg whites…all the rage back in the day…and a few other things
The albumen print, also called albumen silver print, was published in January 1847 by Louis DĂ©sirĂ© Blanquart-Evrard, and was the first commercially exploitable method of producing a photographic print on a paper base from a negative. It used the albumen found in egg whites to bind the photographic chemicals to the paper and became the dominant form of photographic positives from 1855 to the start…
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Vitellin is essential in the fertilization process, and embryonic development in egg-laying organisms
Vitellin is a protein found in the egg yolk. It is a phosphoprotein. Vitellin is a generic name for major of many yolk proteins. Vitellin has been known since the 1900s. The periodic acid-Schiff method and Sudan black B dye was used to help determine that Vitellin is a glycolipoprotein because it stained positive when tested. This protein was…
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Human chorionic gonadotropin (hCG)
Human chorionic gonadotropin (hCG) is a hormone for the maternal recognition of pregnancy produced by trophoblast cells that are surrounding a growing embryo (syncytiotrophoblast initially), which eventually forms the placenta after implantation. Cole LA (2009). “New discoveries on the biology and detection of human chorionic gonadotropin”. Reprod. Biol. Endocrinol. 7: 8. doi:10.1186/1477-7827-7-8. PMC 2649930. PMID 19171054. Gregory JJ, Finlay JL (April 1999). “Alpha-fetoprotein and beta-human chorionic gonadotropin: their clinical significance as…
