embryo biopsy
Removal of cells from an embryo for genetic testing before implantation.
Full Definition
Embryo biopsy is the procedure of removing one or more cells from a developing embryo for genetic analysis during in vitro fertilization cycles. The biopsy can be performed at different developmental stages: polar body biopsy (before fertilization), cleavage-stage biopsy (day 3), or blastocyst biopsy (day 5-6). The removed cells are analyzed for genetic abnormalities while the embryo continues development. Modern protocols favor blastocyst biopsy due to improved accuracy and reduced impact on embryo viability.
Usage
Usage note: Two words when used as a noun; hyphenate when used as an adjective.
In Context
- "Embryo biopsy was performed on day 5 of development for genetic analysis." — IVF procedure note
- "The embryo biopsy technique has evolved to minimize damage to developing embryos." — Clinical research paper