Bilínski Szczepan M, Klag Jerzy, Kubrakiewicz Janusz
Institute of Zoology, Jagiellonian University, PL-30-060, Krakow, Poland.
Institute of Zoology, University of Wroclaw, PL-50-335, Wrocław, Poland.
Rouxs Arch Dev Biol. 1993 Jan;203(1-2):100-103. doi: 10.1007/BF00539895.
Morphogenesis of accessory nuclei (AN) in chorionated oocytes of Cosmoconus meridionator is described. Initially, each AN contains two dense, morphologically distinct inclusions. During the final stages of postvitellogenesis, these inclusions undergo characteristic transformation that is followed by the extrusion of some substances from AN to the surrounding periplasm. Histo- and cytochemical tests indicate that both inclusions contain RNA, although their precise composition is different. Our results support previous suggestions on the involvement of AN in the distribution of morphogenetic signals.
描述了子午锥螺有绒毛膜卵母细胞中副核（AN）的形态发生。最初，每个副核包含两个致密的、形态上不同的内含物。在卵黄发生后期，这些内含物经历特征性转变，随后一些物质从副核挤出到周围的周质中。组织化学和细胞化学测试表明，两个内含物都含有RNA，尽管它们的确切组成不同。我们的结果支持了之前关于副核参与形态发生信号分布的观点。
