MBM™ -4 is a melanocyte growth basal medium sold separately. This can be used with 1 kit of CC-4435 (melanocyte growth medium SingleQuots™ Supplements and Growth Factors). The full MGM™ -4 BulletKit™ consisting of basal medium and supplements can be purchased together using the catalog number CC-3249.The MGM™-4 Melanocyte Growth Medium-4 BulletKit™ is recommended media for melanocyte optimal growth and survival in culture. This medium is offered in our traditional BulletKit™ format, providing flexibility to add or omit components as research needs dictate.ET-3 Growth Supplement, an additional growth factor required for adult melanocyte growth, is sold separately to supplement the MGM™-4 BulletKit™ for a complete formulation specifically designed for growing adult melanocytes. ET-3 offers enhanced growth and plating advantages in addition to limiting other cell type contamination in culture.