TLR4 and Immunodeficiency: Serine proteinases then stimulate the activation of the Toll and immune deficiency (IMD) pathways for the expression of antimicrobial peptides (AMPs), mainly synthetized by the fat body and secreted into the hemolymph (Casanova‐Torres & Goodrich‐Blair, 2013; Jiang et al., 2010; Rosales, 2017).