AIntroFIG 3: Nomarski images of young and older C. elegans.
Panels show nemtodes of different ages of adulthood with anterior on left and posterior on right.
A. 1-day-old worm is smooth, with well organized internal organs. Gonad is pronounced with embryos lined up at various stages of development. Intestine runs in a even line from the pharynx to the anus.
B. 4-day-old worm is still smooth and the organs are distinct. Mostly late stage embryos inside the gonad.
C. 7-day-old worm is post-reproductive with no viable looking embryos or germline. Intestine looks full and there are areas of clearing throughout the body.
D. 15-day old worm features a kinked intestine that is pushed against the hypodermis by other internal components and a gonad that is swollen and filled with tumor-like masses. Extensive areas of clearing throughout the body. (Image source: M. Hess, Ewald Lab.)
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