Fig. 3.
Physical map of P1 clone 13561.
The positions of the Sca-1, Sca-2, and Ly-6Mgenes are shown with exons depicted by filled rectangles. The arrows indicate the transcriptional orientation of each gene. BamHI and EcoRI restriction sites are shown below the genes. TheNotI site is present in the P1 polylinker, not in the genomic sequence.