Fig. 1.
THS119 cells on TBR59 stromal cells.
THS119 cells were maintained within the TBR59 layer as phase-contrast nonrefractile cells (A) and are also shown in cocultures 3 hours after passage with 5% FBS (B), without FBS (C), or with heat-inactivated 5% FBS (D). Bar indicates 100 μm. THS119 under the stromal cell layer were observed as phase-contrast dark cells. Phase-contrast bright hematopoietic cells were cells in suspension or on the surface of the stromal cells.