Tuesdayâs debate between the Democratic presidential candidates, including Hillary Clinton and Bernie Sanders, will be streamed online for free. CNN, which is hosting the debate, will have it available on CNN.com and on the networkâs mobile apps. Coverage begins at 8:30 p.m.
Paraphenylenediamine (PPD) is a chemical substance that is widely used as a permanent hair dye. It may also been found in textile or fur dyes, dark coloured cosmetics, temporary tattoos, photographic developer and lithography plates, photocopying and printing inks, black rubber, oils, greases and gasoline.
Pigmented purpuric dermatoses (PPDs) are a group of chronic and relapsing dermatoses which are morphologically different but histopathologically indistinguishable 1. They are characterized by petechiae, pigmentation, and occasionally, telangiectasia, and typically localized to the lower limbs. The cause of PPDs is largely unknown.