C CHEMISTRY; METALLURGY
C12 BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
C12N MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
C12N2501/00 Active agents used in cell culture processes, e.g. differentation
C12N2501/50 Cell markers; Cell surface determinants
C12N2501/51 B7 molecules, e.g. CD80, CD86, CD28 (ligand), CD152 (ligand)