血小板衍生生长因子platelet-derived growth factor (PDGF)
表皮生长因子epidermal growth factor, EGF
起始因子initiation factor【生化】;initiator【生化】
【计】 十倍factor of ten
【化】 阿仑尼乌斯频率因素Arrhenius frequency factor
补助因子;补助基因supplementary factor;modifier;modifying gene
性因子sex factor
决定因子factor of determination