| At 36 days |
The actual size of this embryo is a mere 6mm. This photo captures the intricate details and differentiation of a human embryo in its sixth week of development. Age is calculated from the day of fertilisation. This red marking indicates retinal pigmentation. The arm and leg buds have visibly elongated, greater distinction in the region of the eyes, and ridges have developed in the spinal region
© Science Photo Library |