👉 In embryology, the term "subnotochordal" refers to a part of the embryo that is located at the junction between the notochord and the disc followed by the vertebral column. The subnotochordal is composed of cells that are responsible for developing into the outermost layer of the notochord. The term was first used in 1902 by William H. Fogg to describe this structure, which later became known as the "subnotoch
