Features of Immunotoxicology Services Creative Bioarray has validated and implemented a series of standardized immunotoxicity testing protocols based on experimental animal models, which are fully compliant with international guidelines and recommendations.

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Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed