Extended Data Fig. 3: C. difficile produces iron phosphate granules.
From: Clostridioides difficile ferrosome organelles combat nutritional immunity
(a) EDS spectrum of a C. difficile fur::CT cell shown in Fig. 3a. The Cu signal was from the tomography holder. (b) EDS spectrum of the bacterial section shown in Fig. 3j. The fur::CT cells were stained with uranyl acetate and two distinct uranium (U) peaks were observed. Both bacterial cells and sections were deposited on 200 mesh Ni TEM grids, and strong Ni peaks were observed for both sets of samples. Two distinct Fe peaks (Lα and Kα) were evident for both sets but no other transitional metals were detected above background levels.
