Fetus

Conjoined Twins

Conjoined Twins

Conjoined twins are twins whose bodies are anatomically joined in utero. The degree to which the twins are attached can range from simple, involving skin and cartilage, to complex, including fusion of the skull(s), brain(s), or other vital organs.

Albrecht von Haller (1708-1777)

<a href="/search?text=Albrecht%20von%20Haller" title="" class="lexicon-term">Albrecht von Haller</a>

Victor Albrecht von Haller was an 18th century scientist who did extensive work in the life sciences, including anatomy and physiology, botany, and developmental biology. His embryological work consisted of experiments in understanding the process of generation, and led him to adopt the model of preformationism called

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