StemBeads^® Blank15 is the first control StemBead^® for StemBeads^® FGF2. It is manufactured and designed in the same fashion asStemBeads^® FGF2 with the average size being approximately 15um in diameter, however, it does not contain any protein. StemBeads family and offers you the same reliability and flexibility as our other StemBead products. Our StemBeads^® Blank15 serve as the perfect vehicle control when using StemBeads FGF2 with your cell cultures.