(I) WT and SKO cells stably expressing HSP47-APEX were delipidated, treated with OA for 1 h and processed for SB-EM. 3D models of LDs and surrounding ER and mitochondria profiles shown on top of a block face image from SB-EM dataset. Insets are representative cross sections from modeled area highlighting the ER-LD association. Red= LD, Yellow= ER, Green=mitochondria. (J) Analysis of LDs from (I). Black lines indicate median, boxes third quartiles, n= 98-227 LDs. (K) Analysis of LDs displaying no ER contacts from (I). Bars: mean % of LDs in ROIs not in proximity to the ER, ± SEM, n= 11-16 ROIs/genotype, **p<0.005 (unpaired T-test). 