抄録
752 benzene workers were medically examined.
The following results were obtained.
1) The young fellow occupied an overwhelming majority in benzene work.
2) The mean of the specific gravidities of blood and plasma and the numbers of red cells and leucocytes is slightly lowered, and the width of its distribution is larger than that of the health.
3) Anemia is frequently appeared among young and old workers, coproporphyrinuria is frequently appeared in youth.
4) Expecting age difference, benzene poisoning is appeared in an early stage, and its adaptability is clear.