Human embryo at 21 days (x170 magnification)
P1020770
Embedded in the uterus wall, a groove has formed down the centre of the embryo. This neural tube marks the midline of the body and will eventually develop into the spine and spinal cord.
Cells at on end have specialised to forma bump which will eventually fold around to form the skull, brain and face. The mother has probably only discovered she's pregnant within the last week.
Human embryo at 21 days (x170 magnification)
P1020770
Embedded in the uterus wall, a groove has formed down the centre of the embryo. This neural tube marks the midline of the body and will eventually develop into the spine and spinal cord.
Cells at on end have specialised to forma bump which will eventually fold around to form the skull, brain and face. The mother has probably only discovered she's pregnant within the last week.