Table l.--Plasma and erythrocyte cholinesterase levels of rats exposed for varying 
periods of time in tobacco warehouses treated with indicated amounts of DDVP 
Amount of DDVP and length 
eo 62 06 2© eo ee 
of exposure Males Females 
Plasma ‘Erythrocytes, Plasma *nrythrocytes 
1 gram per 1,000 cubic feet 3 
al day e e e e e e e e e e e e e es 0.25 O.2h 0.28 0.12 
2 days. e e e ° e e e e e e e e es 035 Pur oo Pyle) 
7 days. e e e ° e e e e e ° e e es: eet LO 033 eee 
MeBNG, Joh ier eee ee oto. one: @ veones 028 aa3 sol oli? 
2 grams per 1,000 cubic feet $ 
ak day oo ee ee ee © @ © © © © &© ef eZ sL5 025 013 
2 days. e ° e e e 6 ° e e ° e ° ee ee cS ooh e ! 
1 days. ° e ® e e ° e e e e e ° e@e e260 e2e e3t Ae) 
Mean. ° e e e e e e ° e e e e e es: e238 reply, 029 09 
10 grams per 1,000 cubic feet 2 
al day e e e e e e e e e e e e e ee ele ok 018 oa 
2 days. ° e e ° e ° e e ° e ° e @ see 63 eed Pais 
7 days. e e e e e e e e e e e e aie 720 ol5 eat el6 
Mean. e e e e ° ° e e e e e e e eo: YAO, ei3 sce Aga ss 
Controls ‘ 632 Pp te ee3 Lg 
Cholinesterase level (Ap H/hr.) 
Table 5.-=-Plasma and erythrocyte cholinesterase values of human volunteers exposed to 
DBVP vapors in tobacco warehouse 
Cholinesterase value @p H/hr.) 
Plasma : Erythrocytes 
Subject 2 ee : After : After 3: ae : After After 
3 ee 2° “first $ second 3: & : first second 
see OS Urea, osure ?: osure 3: SPOSUe : exposur Dos 
3 10a 
De Bote fetes. 28,.ch 20875 0.73 0.7 0.77 0.72% 0, ,608/ 
Je Be oe @ e e e e oe: 1,00 .78/ £8 fee 62 .69L/ .56208/ 
Seas a syoleeewens trae .802/ 39308 269 .612/ og222/ 
: 10b 2 
Re Tew auenesotomene: ae. 600 o512/ oly 251 sie! «782 0b/ 
1/ 8-hour exposure in 1 gram/1,000 cu. ft. warehouse. 
ae 8-hour exposure in 2 grams/1,000 cu. ft. warehouse. 
Oa/ 77-hour exposure in 10 grams/1,000 cu. ft. warehouse. 
/ \ehour exposure in 10 grams/1,000 cu. ft. warehouse. 
als ees 
