In histopathology, the presence of HBsAg is more commonly demonstrated by the use of the Shikata orcein technique, which uses a natural dye to bind to the antigen in infected liver cells.
12.
They were generally extracted from " Roccella " spp . and " Ochrolechia " spp . contain the lichen substance orcin, which converts into the purple dye orcein in the ammonia fermentation process.
13.
I've got an old lab guide for visualizing metaphase chromosomes ( and cell nuclei ) on onion root tips, where you use a heated HCl-orcein mix to break the cells and stain the chromosomes.
14.
Orcein began to achieve popularity again in the 19th century, when violet and purple became the color of demi-mourning, worn after a widow or widower had worn black for a certain time, before he or she returned to wearing ordinary colors.
15.
A paper originally published in 1961, embodying most of Musso's work on components of orcein and litmus, was translated into English and published in 2003 in a special issue of the journal Biotechnic & Histochemistry ( Vol 78, No . 6 ) devoted to the dye.
16.
A single alternative structural formula for orcein, possibly incorrect, is given by the National Library of Medicine and Emolecules [ http : / / www . emolecules . com / cgi-bin / search ? t = ss & q = 1400-62-0 & c = 1 & v =.
