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Medicinal Leech
Medicinal leech (Hirudo medicinalis(). A. Dorsal view. B. Ventral view, a & b: reproductive organs. C. Nervous cord with its ramifications, a: upper part; b: lower part; c: posterior nervous node.
Medicinal leech (Hirudo medicinalis(). A. Dorsal view. B. Ventral view, a & b: reproductive organs. C. Nervous cord with its ramifications, a: upper part; b: lower part; c: posterior nervous node.