Four Series of Anti-Tuberculosis Posters
防治肺结核病宣传画系列
A Series of Anti-Tuberculosis Posters from Shanghai Anti-Tuberculosis Association
上海防治肺结核病宣传画系列
Series D, page 2.
The Spreading Channels of Tuberculosis
肺结核传染的途径
Cause of tuberculosis
-- the tubercle bacillus.
Channel 1 of spreading tuberculosis:
through the respiratory system.
Channel 2 of spreading tuberculosis:
through the digestive system.