the SMA-5::EGFP fluorescence was exclusively detected in the cytoplasm of intestinal cells in strain BJ269. This was somewhat in contrast to the previous observations of Watanabe et al. (Watanabe et al., 2005), who found expression of two
sma-5 reporter constructs containing 1.6 kb of the upstream region and almost none or all of the gene-coding region not only in the intestine but also in the excretory cell and to some degree in the hypodermis. In addition, our observations were in disagreement with the distribution of another reporter containing 4.9 kb of the region upstream of exon 1 described by the same group whose expression was noted only in the pharynx and hypodermis.