vital stain การใช้

• Neutral red can be used as a vital stain.
• "' Janus Green B "'is a basic dye and vital stain used in histology.
• Those stains excluded by the living cells but taken up by the already dead cells are called vital stains ( e . g . trypan blue or propidium iodide for eukaryotic cells ).
• The other measures are break up time, tear flow, hyperemia ( redness, swelling ), tear fluid cytology, and epithelial damage ( vital stains ) etc ., which are human beings physiological reactions.
• This is in contrast to "'vital staining "', when the dye employed is one that is " excluded " from the living cells so that only dead cells are stained positively . ( Vital stains include dyes like trypan blue and propidium iodide, which are either too bulky or too charged to cross the cell membrane, or which are actively rapidly pumped out by live cells .)