Risk level | Tissues | Anatomical structures / routes |
---|---|---|
High | Brain Spinal cord Retina, optic nerve Spinal ganglia Trigeminal ganglia Pituitary gland Dura matera | |
Lower | Peripheral nervesb Spleen Lymph nodesc Tonsild Thymusd Placenta Lung Liver Kidney Blood vesselse Olfactory mucosa CSF Skeletal muscle | Anterior ophthalmic Peritoneum Subcutaneous (high density of sensitive nerve terminals)f |
Lowest | Other | Other |