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Positive Control Airspace stresses
transp., abbr.	PCA

Positive Control: 66 phrases in 23 subjects

Astronautics	1
Automated equipment	1
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Biotechnology	2
Chemistry	1
Clinical trial	1
Economy	1
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Genetic engineering	1
Genetics	5
Immunology	1
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Medical	5
Microbiology	1
Military	25
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Nanotechnology	3
Pharmacology	1
Pharmacy and pharmacology	3
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Technology	4
Virology	1
Weapons of mass destruction	1