Temperature sensitive. Maintain at 15C. Do not distribute this strain; other labs should request it from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Maternally rescued variable abnormal. Some embryonic lethality and a high degree of larval lethality. Worms often have a hypertrophic left side of the head, generally anterior of the terminal bulb.