R. BICK, B. POINDEXTER, UT MEDICAL SCHOOL / SCIENCE PHOTO LIBRARY R. BICK, B. POINDEXTER, UT MEDICAL SCHOOL / SCIENCE PHOTO LIBRARY
Trophoblasts. Fluorescence deconvolution micrograph of trophoblast cells, with PLAC1 expression (red, placenta-specific protein 1), in placental tissue (chorionic villi). A syncytial knot is also present. Trophoblasts are the first cells to differentiate from a fertilised egg (ovum), forming the outer layer of the blastocyst, an early stage of embryo formation. The trophoblast layer eventually forms the placenta. Cell nuclei (blue) have been highlighted with a DAPI stain.
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