Type of packaging and number in each package: 200 threads of medical leeches Net weight: 1 to 3 grams Size of medical leeches: 6 to 10 cm Uses: Medical uses of leech therapy Storage conditions: in water and at a suitable temperature of 18-20 degrees Expiration date: They will survive for 2 to 3 months if the storage conditions are observed Origin: Herodotus Orientalis and Herodotus Medicinalis