PCR amplified fragments of PIS in Guanzhong dairy goats.

A, Horned and polled goats; B, The distribution of the primers in goat PIS region; C~G, PCR products of PIS whole; PIS1-1, PIS1-2, PIS2, PIS3. M, DL5000 Marker; P1-P3, PCR products of polled goats; H1-H3, PCR products of hornedgoats.