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Small wooden box to hold calf lymph, England, 1900-1910

After calves had been inoculated with smallpox, the lymph containing white blood cells which fight against disease are extracted and preserved in capillary tubes. The lymph could then be used to vaccinate people against smallpox. Calf lymph replaced the human kind in 1898 as human lymph spread other infections, such as syphilis. The Army Vaccine Institute in Aldershot used this box to store lymph.…