(76.)
Morula stage is the point at which the zygote has divided several times into a cluster of cells.
Clinical pregnancy rates were 63% for two blastocysts, 32% for one blastocyst and one
morula, and 17% for two morulae.
Percentages of zygotes developed to
morula and blastocyst stages were evaluated on days 5 and 8, respectively.
Cultura, democracia e socialismo: as ideias de Carlos Nelson Coutinho em debate.--1.ed.--Rio de Janeiro:
Morula, 2016.
Reactive oxygen species are also produced when cytotoxic
morula cells sense the presence of nonself (Ballarin et al., 2001) and release the enzyme phenoloxidase, which is stored in an inactive form inside their granules (Cima et al., 2004; Franchi et al., 2015).
The first attempt of identifying the embryonic development of Omani abalone was conducted by Stirn and Al Hashmi (1996) which identified six stages; nonfertilized egg, cleavage (4-cell stage), advanced embryo (
morula), unhatched trochophore larvae, initial veliger, and finally advanced veliger.
Los estados de desarrollo embrionario descritos son: eliminacion del primer corpusculo polar, embrion de dos celulas, tetrada,
morula, trocofora intracapsular y veligera intracapsular; eclosionando una larva en estado de veligera planctotrofica ~20 dias post-postura (Contreras & Perez, 2010).
The research on mechanisms directing blastocyst formation has demonstrated that (a) [Na.sup.+]/[K.sup.+]/ATPase has a polarized distribution confined to the trophectoderm basolateral membrane regions just before the onset of cavitation, (b) expression of [Na.sup.+]/[K.sup.+]/ATPase subunit genes are up-regulated during the
morula to blastocyst transition, (c) treatment with ouabain (a potent and specific inhibitor of the [Na.sup.+]/[K.sup.+]/ATPase) affects cavitation and blastocyst formation in a number of mammalian species, and (d) [Na.sup.+]/[K.sup.+]/ATPase regulates the formation and function of trophectoderm tight junctions (6).
Morula stage; cleavage started in the fertilized egg after30 minutes.
The maturation rate and development to
morula and blastocyst stage for oocytes matured at 10 ug ml-1 fenugreek seed extract was significantly higher than those matured at 1ug ml-1 of fenugreek seed extract and the control group.