Abstract：
:Experiments in vitro have shown that 20-hydroxyecdysone (at a concentration of 0.2 and 2 microM and after 12 and 24 hr of incubation) is able to induce the precocious deposition of chorion materials by the follicular epithelium of young oocytes of the cockroach Blattella germanica. Since previous studies had shown that 20-hydroxyecdysone levels in B. germanica ovaries increase with oocyte maturation to reach a peak just before oviposition, we therefore hypothesize that ovarian ecdysteroids trigger Choriogenesis in this species through an autocrine action.
journal_name
Tissue Celljournal_title
Tissue & cellauthors
Bellés X,Cassier P,Cerdá X,Pascual N,André M,Rósso Y,Piulachs MDdoi
10.1016/0040-8166(93)90019-hsubject
Has Abstractpub_date
1993-04-01 00:00:00pages
195-204issue
2eissn
0040-8166issn
1532-3072pii
0040-8166(93)90019-Hjournal_volume
25pub_type
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