Genetically modified crops in developing countries.
D000349:Africa; D000383:Agriculture / Q000191:economics / Q000639:trends*; D003906:Developing Countries; D017753:Ecosystem; D030841:Food, Genetically Modified / Q000592:standards*; D022761:Gene Transfer, Horizontal; D006801:Humans; D003313:Zea mays / Q000235:genetics / Q000254:growth & development