48
An6575890280170319
amnion,10355890280138366516585735885957
an20515890280134281
aqueous23915890280134281427567714861970
membrane,34215890280224362584729825952109812351304
an47865890280134281
amniotic51265890280134357504569715808873991
vesicle,61765890280126263372437554618758828
or70615890280148246
sac73705890280105239357
is7791589028060169
one80185890280148292429
of85055890280148233
the860925028094240380
germ12989250280132269367590
membranes19449250280223363586733830957110412431352
characteristic33599250280116262394492617735828963106011221230131813811498
of49199250280147233
mammals,52099250280224358581804938100311121182
birds,64489250280147211307450560630
and71389250280134281427
reptiles.7629925028093227372463526588726834903
The93312610280136283422
main141312610280223357422568
function20441261028080227373491584649796943
of304812610280147233
the33441261028088235374
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is47001261028061170
to49331261028087231
protect522312610280147243384477613730823
the61081261028090237376
embryo654212610280140363510607734877
from74831261028083181323546
the80931261028089233370
effects77715980280139222305437555649759
of158815980280148233
environmental187515980280139285405468563704850107212101355144615751639
factors35751598028084212330424569667771
and440115980280135281428
create488415980280118216352486577714
favorable566115980280752013204635586838288901026
conditions67401598028011926441155862271577992610731182
for79851598028081222320
its83681598028056147254
development3952193402801472844085446077528981120125814031493
Extraembryonic987135036117633946459075993812301422154917191909210021872338
membranes3391135036129347376495610831252144416231766