bah-3 was identified in screens for mutants that were resistant to the attachment of biofilms produced by bacteria such as Yersinia pestis and Yersinia pseudotuberculosis; bah-3 most likely encodes a surface cuticle component required for biofilm formation; bah-3 mutants also show the constitutive larval display (CLD) phenotype where a first larval stage (L1) epitope is expressed at all four larval stages and bound by the monoclonal antibody M37, similar to the srf-6 mutant phenotype; normally wild-type worms can be induced to display a L1 epitope in response to environmental signals.