Fig. 4From: NanoSIMS observations of mouse retinal cells reveal strict metabolic controls on nitrogen turnoverSummary of results from the outer plexiform layer (OPL) across all 15N-labelled treatments. a OPL 15N/14N ratios were obtained from both ONL and INL images. The dashed lines show typical sampling locations for the OPL. b Average 15N/14N ratios across all 15N-labelled treatments in the OPL. Error bars represent 1 standard deviation (1σ)Back to article page