About CD41
This gene encodes a member of the integrin alpha chain family of proteins. The encoded preproprotein is proteolytically processed to generate light and heavy chains that associate through disulfide linkages to form a subunit of the alpha-IIb/beta-3 integrin cell adhesion receptor. This receptor plays a crucial role in the blood coagulation system, by mediating platelet aggregation. Mutations in this gene are associated with platelet-type bleeding disorders, which are characterized by a failure of platelet aggregation, including Glanzmann thrombasthenia. [provided by RefSeq, Jan 2016]

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.