<unk>  Y<unk>  B<unk>  is the name of several fluorescent acidic compounds which bind to and form salts with basic, or<unk> ophilic, compounds like proteins containing amino acid residues such as arginine and lysine, and stains them dark red or pink as a result of the actions of bromine on<unk> . In addition to staining proteins in the cytoplasm, it can be used to stain collagen and muscle fibers for<unk> xamination under the microscope. Structures, that stain readily with<unk> , are termed<unk> ophilic. In the field of histology,<unk>  Y is the form of<unk>  used most often as a histologic stain.
Eosin
Muscle spindle
Gumma 
Neurilemma
Lens
Lens 
Subtitles
Athelia 