Molecular attributes of stratification and compartmentalization are largely found in HM containing mucins, large amounts of AMPs and IgA as well as diverse immune cell types, which can evolve across lactation and respond to mother or infant infection (Schroten, 2001; Hassiotou et al., 2013b; Trend et al., 2015a; Donovan, 2019). Here, ADSL is linked to infection.