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Fig. 3. Protrusions in C. elegans associated with tsp-15(sv15). (A) An L4 larva from the SP2275 strain with small protrusions of the hypodermis. A Nomarski image of the cluster of protrusions is shown at higher magnification in the inset. Nuclei can be seen in several of them, and the posterior-most protrusion is connected to the main body by a narrow stalk (arrow), a common feature of small protrusions. (B) An L4 larva from SP2275 with two large protrusions. The dorsal protrusion is connected to the main body in the region delineated by the arrowheads. The protrusion clearly contains part of the intestine. Bars, 50 µm.