Fig. 2
From: Iron concentrations in neurons and glial cells with estimates on ferritin concentrations
Quantitative element maps. Element images of P, S, Ca, Cu, and Fe. The element images were used to extract the average concentrations from regions of interest. The somata of the neurons are visible due to their high phosphorus content (P image). The extracellular matrix is rich in sulfur (S image). Within the region of the neurons (N), the iron map shows elevated iron level in the somata and the hot spot in the nucleolus. The three bright phosphorus spots (top, center, and right in the P-map) are glial cells (G) with high iron concentrations