Table 1. Reduced colony formation in cancer-stromal fusion hybrids.

Cells tested	Single cells plateda	Colonies formedb	Efficiency (%)
RL-1	141c	14	9.9
HPS-14	125c	54	43.2
HPS-15	132c	69	52.3
RL-1/HPS-14 hybrids	1456d	0	0
RL-1/HPS-15 hybrids	1441d	41	2.8

^aWells containing a single cell 24 hours after the plating were enumerated.

^bColonies from the wells containing a single cell were enumerated.

^cData were from one colony formation assay.

^dData were combined results from 4 repeated colony formation assays.