Spider embryo with a loss of the waist region upon knockdown of the gene waistless. Hoechst staining with fluorescent stereomicroscopy. An ancient gene is crucial for the development of the ...
Despite differences in shape and size all insects are characterized by a body organization that includes three units: a head, thorax and abdomen (panels A-B). In contrast all spiders (and other ...
Descriptions of the embryo go back at least to the time of Aristotle, but it has only been since the late 19 th century and early 20 th century that advances in experimental approaches allowed ...
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