The increased transcription of this gene may be associated with the protective immunity activation induced by probiotics or metabolites; furthermore, the LGBP mRNA transcripts in shrimp fed with probiotics have stronger activation than those fed with metabolites.The lvLec gene was initially cloned from haemocytes in L. vannamei by the expressed sequence tag, and the full-length cDNA was 618 bp (Zhang et al., 2009).