Contrary to what many believe, cigarette butts are not harmless
The filter as claimed in claim 1, wherein the smoke containing very low level of p-BSQ is incapable of producing significant oxidative damage to the lung microsomal proteins of guinea pigs when said guinea pigs are exposed to smoke emitted from said charcoal-filtered tobacco smoke devices in contrast to marked damage of the lung tissue when the guinea pigs are exposed to smoke from tobacco smoke devices without having the charcoal filter

Double Glenn Co) SOLD FOR 60 Wills cigarette cards - Builders of The Empire (1898 W.20) a complete set of 50 (with extra no.42 and no.50), no.s 3, 13, 28 and 31 all have uncorrected date errors SOLD FOR 220 Wills overseas cigarette cards - Victorian Football Association (W.110) and Victorian Football League (1908 W.111) an incomplete set of 93, all with Capstan on front SOLD FOR 95 Wills overseas cigarette cards - Puzzle Series (1910 Scissors Issue W.298) a complete set of 25 blue green background and 20 with light yellow background SOLD FOR 240 Wills overseas cigarette cards - Past and Present Champions (1908 W.89) an incomplete set of 55 (mixed Capstan Cigarette and Tobacco Issues) SOLD FOR 150 Ogdens cigarette cards - Famous Footballers (1908), a complete set of 50 together with Football Club Colours (1906 H.68/og.86) a complete set of 51 SOLD FOR 65 Wills overseas cigarette cards - Drum Horses (1909 W.192) a complete set of 32, Scissors Issue vertical format, open Scissors packet SOLD FOR 130 Wills overseas cigarette cards - Boxers (1911 W.153) an incomplete set of 34 out of 36, Scissors Issue

The puff count is estimated at 2000, but the capacity is over half the size of some 10,000 puff vapes
The team also included colleagues at the University of Leicester in the UK
Even the indefatigable Jessie flagged