About CD200
This gene encodes a type I membrane glycoprotein containing two extracellular immunoglobulin domains, a transmembrane and a cytoplasmic domain. This gene is expressed by various cell types, including B cells, a subset of T cells, thymocytes, endothelial cells, and neurons. The encoded protein plays an important role in immunosuppression and regulation of anti-tumor activity. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jan 2016]

About APC-R700
APC-R700 from BD Biosciences has an excitation peak at 651 nm and an emission peak at 705 nm. It's useful in flow cytometry and is spectrally similar to APC-Cy5.5, APC-Alexa 700, APC-Alexa 680 and Seta-APC-705.