Fig. 5. Representative images from transmission electron microscopy of spleen tissue. (A) Normal spleen cell in control group. (B) No significant changes in spleen cells in the low dietary molybdenum (LMo) group. (C) Mitochondrial crest fracture and vacuolation of spleen cells in the high dietary molybdenum (HMo) group. (D) Vacuolation and crest fracture of spleen cells in the cadmium (Cd) group. (E) Nuclear deformation and chromatin marginalization of spleen cells in the LMo + Cd group. (F) Typical characteristics of apoptosis, including karyopyknosis, mitochondrial crest fracture, and vacuolation in the HMo + Cd group. 2,950× (A, C–E), 1,200× (B), 2,200× (F).