the forms and structures of gill pouch in five lampetra japonicas were observed in detail.
本文对五条日本七鳃鳗腮囊的形态结构进行了比较详细的观察。
the results indicate that there are seven pairs of gill pouches in lampetra japonica (martens). the wall of gill pouch folding inward forms gill-lobes and secondary gill lobe.