ULTRASTRUCTURAL CHANGCS OF THE PROTHORACIC GLAND CELLS DURING ECDYSONE SECRETION AT LAST TWO LARVAL INSTARS OF PHILOSAM1A CYNTHIA RICINA

 
  • 蓖麻蚕前胸腺细胞超微结构的变化与蜕皮激素分泌活动的关系
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