词根词缀：blasto-, blast-, -blast, -blastic

【来源及含义】Greek: germ, bud; shoot, formative cell or layer; of or pertaining to an embryonic or germinal stage of development

【同源单词】blast, blastema, blastocarpous, blastocyst, blastocyte, blastoderm

词根词缀：meso-, mes-, mesi-

【来源及含义】Greek: middle, intermediate; close to a center line; between

【同源单词】brachymesophalangia, circumesophagal, dolichoeuromesocephalus, mesencephalic, mesencephalon, mesencephalotomy