[Methods of extraction and purification of gossypol].
D001208:Asia; D002681:China; D003267:Contraception; D003270:Contraceptive Agents; D003272:Contraceptive Agents, Male; D003906:Developing Countries; D004467:Economics; D005193:Family Planning Services; D005202:Asia, Eastern; D006072:Gossypol; D012106:Research; D013672:Technology
D003270:Contraceptive Agents; D003272:Contraceptive Agents, Male; D006072:Gossypol
Asia; China; Contraception; Contraceptive Agents, Male; Contraceptive Agents--cost; Developing Countries; Eastern Asia; Economic Factors; Family Planning; Gossypol--cost; Research And Development; Technology