FIG. 4.

Expression of fibronectin gene in T × L-cell hybrids. Total RNA (15 μg/lane) of the parental (T, L) and hybrid cells were electrophoresed, blotted, and hybridized with a labeled fibronectin radioactive probe. Lanes 1–7: BW5417, L, Hy1B, Hy2A, Hy2C, Hy3A, and normal embryonic fibroblast from C3H mouse (F), respectively. The blot was stripped, rehybridized with a β-actin cDNA probe, and is shown in the lower part of this figure.