Fig. 4From: De novo transcriptomic analysis of cowpea (Vigna unguiculata L. Walp.) for genic SSR marker developmentAn illustration of a PAGE gel showing allelic variation for the genic SSR marker Vu6289 among 32 cowpea accessions. The 32 cowpea germplasm accessions are listed in Additional file 5. M: pBR322 DNA/MspI DNA ladderBack to article page