"Six deaths occurred, however, among the 26 guinea pigs used for controls and 10 deaths among the 26 guinea pigs exposed to gas. All but three of the 16 deaths occurred during the first half of the test-period. Without exception and regardless of whether the animals were exposed to air or dichloro-difluoro methane, the cause of death appeared to be congestion and edema of the lungs, and pneumonia."

Table 2 states:

Controls:

4 'exposed for 15 7-8h/d sessions and 3 4h/d sessions: "Killed for autopsy for comparison with animals exposed to vapor."

3 'exposed' for 35 7-8h/d sessions and 8 4h/d sessions: "Do." (assumed to mean 'ditto'; i.e., 'Killed for autopsy for comparison with animals exposed to vapor.')

10 'exposed' for 56 7-8h/d sessions and 11 4h/d sessions: "Alive at end of test. Killed for autopsy - three after 1 day, seven after 32 days."

3 'exposed' for 50 7-8h/d sessions and 10 4h/d sessions: "Alive at end of test. All killed for autopsy after 32 days."

6 'exposed' for 1 7-8h/d sessions and 1 4h/d sessions: "Died during test."*

*“Five pigs died after exposures ranging from 6 full - day and 2 half - day to 16 full - day and 4 half - day; and one pig, after 39 full - day and 8 half - day.”

Exposed:

4 exposed for 15 7-8h/d sessions and 3 4h/d sessions: "Killed for autopsy during test."

3 exposed for 35 7-8h/d sessions and 8 4h/d sessions: "Do." (assumed to mean 'ditto'; i.e., 'Killed for autopsy during test')

9 exposed for 56 7-8h/d sessions and 11 4h/d sessions: "Alive at end of test. Killed for autopsy - two after 1 day, eight after 32 days; one died after 6 days."

10 exposed for 3 7-8h/d sessions and 3 4h/d sessions: "Died during test."*

*"Five pigs died after exposures ranging from 3 full - day and 1 half - day to 15 full - day and 4 half - day; and five pigs between 16 full - day and 3 half - day, and 30 full - day and 7 half - day."

Male and Female Guinea Pigs