Bone and Adipose Tissue Derived Primary Cells - Yield of Adherent Cells. Bar graph represents total adherent cell counts per million cells plated at day 6 of culture of MS, TS, and AT. Cells within colonies and free cells per million cells plated at day 6 of culture are presented for MS and TS. Data are presented as Mean ± Standard Error, (n = 8). CTP: Connective Tissue Progenitor, MS: Marrow Space, TS: Trabecular Surface, AT: Adipose Tissue.