Fig. 2. Retarded development of the lateral hypodermis in a lin-46 mutant. A DIC micrograph of an adult animal of the genotype lin-46(ma164) grown at 20°C showing the same field in two planes of focus. Left, a pair of recently divided lateral hypodermal seam cells. Right, the gap in adult lateral alae overlying these cells. These gaps initially overly an even number of seam nuclei, but later, the anterior cell fuses with the main hypodermal syncytium.