LYZ and hyperinsulinemic hypoglycemia, familial, 4: Other studies searching for transcripts with specific functions found an increase in the expression of products associated with immunity, such as the immune deficiency gene (IMD) and RpRelish [61]; with defense against pathogens, such as lysozyme [34,54,61]; and with antimicrobial peptides, such as defensin B, prolixicin [34,61], defensin 3, and defensin 4.