About CD90
This gene encodes a cell surface glycoprotein and member of the immunoglobulin superfamily of proteins. The encoded protein is involved in cell adhesion and cell communication in numerous cell types, but particularly in cells of the immune and nervous systems. The encoded protein is widely used as a marker for hematopoietic stem cells. This gene may function as a tumor suppressor in nasopharyngeal carcinoma. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2015]

About PE-Alexa 647
PE-Alexa 647 from Thermo Fisher Scientific has an excitation peak at 565 nm and an emission peak at 668 nm. It is useful for flow cytometry applications. PE-Alexa 647 is an alternative to PE-Cy5.