Stroke & Vascular Disorders
Secondary stroke prevention
Sep. 29, 2022
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Histological sagittal section of a human embryo, gestational age 7 weeks. Anterior direction is left. The notochord appears in the cervical bodies and in a zigzag course in the cranial base, ending rostrally close to the developing pituitary gland. A pronounced metachromatic cartilaginous tissue is seen close to the notochord. (Toluidine blue) (Reproduced with permission. J Craniofac Genet Dev Biol 1995;15:157-61.)