Assertion: embryo | /r/HasProperty | visualized at higher magnification
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Source sentences:
text: Embryos are then visualized at a higher magnification (40–60×) and classified according to their morphology, stage of development (unfertilized oocytes, early morula, tight morula, blastocyst, expanded blastocyst, hatched blastocyst, etc), and quality (excellent, good, fair, poor, degenerate).