The approximate biotin requirements of breeding hens have been established and the embryos examined for gross pathological symptoms and the approximate age at death are recorded. Cravens, W.W., W., & Sebesta, M.A. (1944). Effect of biotin deficiency on embryonic development in the domestic fowl.

IsoleucineĀ (symbolĀ IleĀ orĀ I)Ā is an α-amino acidĀ that is used in theĀ biosynthesisĀ ofĀ proteins. It contains an α-amino groupĀ (which is in the protonated āˆ’NH+3Ā form under biological conditions), an α-carboxylic acid groupĀ (which is in the deprotonated āˆ’COOāˆ’Ā form under biologica

Dimeric members of the avidin family are also found in some bacteria. In chicken egg white, avidin makes up approximately 0.05% of total protein (approximately 1800 Ī¼g per egg). The tetrameric protein contains four identical subunits (homotetramer), each of which can bind to&nbs

A folk tradition in Denmark and southern England imaginedĀ sea urchin fossilsĀ to be thunderbolts, able to ward off harm by lightning or by witchcraft, as anĀ apotropaic symbol.Ā Another version supposed they were petrified eggs of snakes, able to protect against heart and liver disease, poisons, an

Agrin was originally found in the electric organ of Tarpedo california and in the basal lamina at the neuromuscular junction as a protein that directs the aggregation of acetylcholine receptors (AChR) and acetylcholinesterase (AChE) at synaptic

Food allergies are potentially fatal immune-mediated disorders that are growing globally. The relationship between sex and food allergy remains incompletely understood. Here we tested the hypothesis that, should sex influence the clinical response to food allergens, this would be reflected by a sex

VitellogeninĀ (VTGĀ or less popularly known asĀ VG) (fromĀ LatinĀ vitellus, yolk, andĀ genero, I produce) is a precursor of egg yolk that transports protein and some lipid from the liver through the blood to the growing oocytes where it becomes part of the yolk. Normally, it is only found in the blo

VitellinĀ is a protein found in theĀ egg yolk. It is a phosphoprotein.Ā Vitellin is a generic name for major of many yolk proteins. Vitellin has been known since the 1900s.Ā The periodic acid-Schiff method and Sudan black B dye was used to help determine that Vitellin is a glycolipoprotein because i