DLG4 and Anxiety: Exposure to LB is sufficient to cause multiple developmental abnormalities including increased anxiety in juvenile males (Fig. 2a), stunted growth (Fig. 1b and Fig S1), abnormal microglial density and morphology (Fig. 1h−k), and reduced expression of the synaptic marker PSD95 in the hippocampus (Figs 1f and 3k).