1. Kev sib tham ntawm cov hmoov ntxhua khaub ncaws yog carcinogenic, lom, nrov tsis yog lub tswv yim ntawm kev tiv thaiv ib puag ncig niaj hnub no. Tau tshwm sim ntau zaus hauv keeb kwm. Txog qhov kawg no, xyoo 1945, Tebchaws Meskas tau kuaj qhov ncauj rau 6 tus txiv neej noj qab nyob zoo, noj tshuaj txhua hnub ntawm 100 mg ntawm sodium alkyl benzene sulfonate, 120 hnub sib law liag, kev saib xyuas kev noj qab haus huv paub tseeb tias muaj pes tsawg hemoglobin, cov ntshav ntshav, lub raum ua haujlwm, plab hnyuv tsis tau hloov pauv.
2. 1960 Tsev Kawm Qib Siab Chicago tus kws kho mob qog noj ntshav zoo li Dr.
3. Xyoo 1963, rov hais dua qhov kev sim ntawm cov kws tshawb fawb hauv Tebchaws Meskas, Lub Tebchaws Yelemees, thiab los txog qhov kev txiav txim siab tib yam.
4. 60 ntawm lub xyoo dhau los, xibfwb qhia ntawv nyob sab hnub tuaj ntawm Mie University peb tsob ntoo zoo nkauj ntawm kev ntxuav cov hmoov rau teratogenicity ntawm cov lus nug tau tsa, Tsoomfwv Nyij Pooj tau cog lus rau University of Nagoya, Mie University, Hiroshima University, Kyoto University kev sib koom ua ke, tom qab 8 lub hlis , sodium alkyl benzene sulfonate ua pov thawj tsis muaj kev cuam tshuam teratogenic ntawm tus menyuam hauv plab.
5. Tom qab ntawd, Tsev Kawm Qib Siab Tokyo University kho mob thiab 10-20 ntawm ob lub tshuab ntxhua khaub ncaws koom nrog ntxuav cov neeg ua haujlwm tsim cov hmoov, cov neeg ua haujlwm ntawm 279 tus neeg tau ua tus lej ntsuas ntawm lub siab ua haujlwm tshawb xyuas, txhua qhov kev sim tshuaj yog txhua yam ib txwm muaj.
6. Thaum lub Plaub Hlis 1973, ntawm rooj sab laj thoob ntiaj teb tau teeb tsa los ntawm World Health Organization hauv Switzerland, cov xab npum (suav nrog ntxiv cov mis ntawm cov tshuaj ua kom cov tshuaj tsw qab dawb) tsis yog carcinogenic, cov teeb meem teratogenic mus rau qhov xaus.
