摘要 |
A cell culture microcarrier having positively charged cross-inked polysaccharides and basic groups linked therewith wherein the basic groups have the formula (I) <IMAGE> (I) with Z being an optionally substituted hydrocarbon chain having at least 2 carbon atoms, R1 and R2 being the same or different and representing alkyl, aryl, or aralkyl groups, and n is at least 1. |