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Vitamin A

Dietary vitamin A is derived from a variety of carotenoids found in plants. It is enriched in the liver, egg yolks, and the fat component of dairy products. … Retinol and derivatives of retinol that play an essential role in metabolic functioning of the retina, the growth of and differentiation of epithelial tissue, the growth of bone, reproduction, and the

Huperzine A

Huperzine A, is a naturally occurring sesquiterpene alkaloid found in the extracts of the firmoss _Huperzia serrata_. … It is currently being investigated as a possible treatment for diseases characterized by neurodegeneration – particularly Alzheimer’s disease.

Padimate A

Padimate A is an ester derivative of PABA and an ingredient in some sunscreens. … It absorbs ultraviolet rays thereby preventing sunburn, however, its chemical structure and behaviour is similar to an industrial free radical generator.

Hepatitis A Vaccine

[A199182] Known by several trade names, such as Havrix and Twinrix, the Hepatitis A vaccine has been formulated for immunization against hepatitis A virus (HAV) infection and safely confers strong protection … Hepatitis A viral infection can lead to significant morbidity and mortality, with signs and symptoms that include anorexia, nausea, vomiting, and liver failure.

Botulinum toxin type A

In 2002, botulinum toxin A, also known as onabotulinumtoxinA or Botox, was the first type A botulism toxin to be introduced into the market for cosmetic use. … [A231824] With a wide variety of applications and favourable safety profile, Botulinum toxin A injection is a minimally invasive and promising treatment for cosmetic imperfections, muscle spasms, and other

Influenza A virus A/Brisbane/10/2010 live (attenuated) antigen

A seasonally-specific component of the influenza vaccine. The influenza vaccine, also known as the "flu shot", is a vaccine that protects against infection from the influenza viruses. … Inactivated vaccines contain a virus particle that has been grown in media and then subsequently killed, or inactivated, through exposure to heat or chemicals such as formaldehyde 3.

Synthetic Conjugated Estrogens, A

However, once a woman stops ovulating there is a sharp decline in the production of progesterone and estradiol by the ovaries and a consequent fluctuation in LH and FSH due to a lack of feedback control … (FSH) through a negative feedback mechanism.

Haemagglutinin-strain A(H3N2)

Haemagglutinin-strain A(H1N1)

Influenza A virus A/California/7/2009 (H1N1) live (attenuated) antigen

A seasonally-specific component of the influenza vaccine. The influenza vaccine, also known as the "flu shot", is a vaccine that protects against infection from the influenza viruses. … Inactivated vaccines contain a virus particle that has been grown in media and then subsequently killed, or inactivated, through exposure to heat or chemicals such as formaldehyde 3.