Effects of co-exposure to CS2 and noise on hearing and balance in rats: continuous versus intermittent CS2 exposures

Table 1 Numbers of animals used in this study for each experimental condition

Method	PRN	DPOAE	Light microscopy		SEM	Total number of animals per group
Time-points	T0/T1/T2	T0/T1/T2	T1	T2	T2	Total number of animals per group
Controls	36	35	10	10	10	71
Noise	12	12	5	6	5	24
63 ppm CS₂ + Noise	7	8	–	4	4	15
1 × 15 min 250 ppm CS₂ + Noise	11	9	5	5	5	20
2 × 15 min 250 ppm CS₂ + Noise	7	11	–	–	–	18
250 ppm CS₂ + Noise	13	11	4	5	5	24

CS₂ carbon disulfide, DPOAE Distorsion Product Oto-Acoustic Emission, PRN post-rotatory nystagmus, T0 prior to exposure, T1 immediately following exposure, T2 4 weeks post-exposure, SEM scanning electron microscopy. NB: As several analytical techniques were performed on samples from individual animals, the number of animals indicated in the right-most column does not correspond to the sum of the five other columns

ISSN: 1745-6673