Morula


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Related to Morula: blastocoel, trophoblast, embryoblast

morula

[′mȯr·ə·lə]
(embryology)
A solid mass of blastomeres formed by cleavage of the eggs of many animals; precedes the blastula or gastrula, depending on the type of egg.
(invertebrate zoology)
A cluster of immature male gametes in which differentiation occurs outside the gonad; common in certain annelids.

Morula

 

a stage in the development of the embryo in multicellular animals, preceding the completion of the period of cleavage. In the morula stage, the embryo is a mass of cells (blastomeres) that resembles the aggregate fruit (“berry”) of the raspberry, blackberry, or mulberry. The morula stage is followed by the blastula stage.

References in periodicals archive ?
The present report provides morphological evidence of imposex for the first time in the neogastropod Morula granulata in Pakistan.
activa en la membrana basal del trofoblactodermo para transporte ionico activo, esto establece un gradiente que induce movimiento de liquido hacia adentro del blastocele, provocando expansion que hace que las celulas de la morula compactada se ubiquen hacia la zona externa o interna de las vesiculas llenas de liquido, con lo cual se forma una capa celular externa que recibe el nombre de trofoblasto y una masa celular interna llamada embrioblasto, originandose de esta manera el estadio de blastocisto (11); el cual alrededor de los 8 dias de vida posee aproximadamente 120 celulas asociadas con la masa celular interna (embrioblasto) (25%) y el trofoblasto (75%) (1,3).
As pointed out by Hirose (2003), in viviparous botryllids, it is possible that only tunic cells bear allorecognition sites but that morula cells play a pivotal role in the allorejection reaction.
Los embriones de la tercera replica del experimento que desarrollaron hasta morula compacta o blastocisto se transfirieron a dos cabras receptoras sincronizadas (dia 7 [+ o -] 1 del ciclo estral, dia 0 = inicio del celo).
Phagocytes and morula cells are two types of circulating hemocytes that play a key role in ascidian immunobiology.
However, it has been reported that the presence of glucose in the fertilization medium inhibited development to the morula and blastocyst stages (Lim et al.
When SNAP was applied after fertilization or first division, we observed no morphological alterations in the morula.
Although no significant differences in the embryonic development of 8-cell and morula stage among the control and treatment groups were founded, the addition of BME (both 5.
scalaris, we found that the hemocytes with a central role in the rejection reaction are not morula cells (MCs) but phagocytes.
The developmental rates beyond morula stage in the BOEC co-culture group was significantly higher than in the control group (p<0.
Boar semen treated with taurine (100 mM) was significantly increased the developmental rates of morula and blastocyst (70.
To test the hypothesis that in vitro culture of mammalian preimplantation embryos alters the architecture of their zona, female B6C3F1 mice were superovulated, mated, and sacrificed at various times to obtain 6- to 8-cell, compacted morula (c.