Being positive about the smear.
Freeman
R
R
Magee
J G
JG
Watt
B
B
Rayner
A B
AB
D006801:Humans; D008828:Microbiological Techniques / Q000592:standards; D016133:Polymerase Chain Reaction / Q000379:methods; D012680:Sensitivity and Specificity; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis*