Permanent hair dyes often contain PPD, a chemical vital for vibrant, lasting colour. However, experts warn of serious health ...
BCG (Bacillus Calmette - Guerin) vaccine is made from a treated (attenuated) live strain of bacterium derived from Mycobacterium bovis, a bacterium which typically causes tuberculosis (TB) in cattle ...
The majority of permanent hair dyes used in the US and Europe contain the aromatic amine p-phenylenediamine (PPD). A growing ...
Tulane University professor of medicine Zhen Huang and his team of researchers have developed a simpler way to test for ...
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