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  • noun

Synonyms for conceptus

an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life

References in periodicals archive ?
We hypothesize that the intricate connections between equal gender proportions and optimal conceptions at the core of the fertile window of the menstrual cycle and between disproportionate rates of male-biased and pathologic conceptuses outside of it are due to periovulatory hormone modulation, which simultaneously affects cervical liquefaction and oocyte maturation (8,9).
We hypothesize that determination of both male sex and pathology of the progeny by PrOO will initially cause a positive male-biased dose response, which, after having reached a threshold, will be followed by a negative one due to disproportional loss of male-specific conceptuses and sublethal X-linked genes (21).
The antiestrogenic action of dioxin provokes periovulatory hormone variation and PrOO and leads to disproportionate rates of male-biased pathologic conceptuses outside the fertile window of the menstrual cycle.
On the basis of this PrOO hypothesis, we suggest that female experimental animals exposed to low doses of dioxin, when mated with unexposed males, will experience an increase of male-biased conceptuses and progeny, accompanied by loss of males.