Milligrams or less of tar & condensed smoke containing many chemicals including some that cause cancer ;

8毫克或少于此量的 焦油&一种凝固起来的烟垢，含有许多化学成份包括引起 癌症的化学成份；

Expression of melanoma antigen-a mRNA in coal tar pitch-induced lung cancer tissues in mice

黑素瘤抗原-a基因在 煤焦 沥青烟气诱发小鼠 肺癌组织中的表达及其意义

Objective : To investigate the expression of mage-a mRNA in lung cancer tissues of mice induced by coal tar pitch ( CTP ) fume and to discuss the above model for lung cancer immunotherapy with mage-a.

目的：探讨 煤焦沥青（CTP）烟气诱发小鼠 肺癌组织中黑素瘤抗原-a（mage-a）基因mRNA的表达及其意义。

However it is tar that causes cancer .

然而，导致 癌症的正是 焦油。

The characteristics of coal tar pitch - induced rat lung cancer were as follows : 1 . All occurred in the periphery of both lungs ;

煤焦沥青诱发的大鼠 肺癌的特征如下：1. 癌肿全都发生在肺的周边部位；