kyIs150 [tax-2(delta)::GFP + lin-15(+)]. sax-1 is temperature-sensitive. ky491 was isolated by PCR from a deletion library. [NOTE: (12/29/2020) This strain has been found to actually be carrying the ky491 deletion allele of sax-1, not the ky211 point mutation as previously reported.] ky491 is a 1263 bp deletion in sax-1 (left flanking sequence: atgaagcccagg ctgtgaataaattgaatg, right flanking sequence: ccaatcacagtcagcctccgataaaatgtc). 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.