Date of issue: 
There are many hypotheses on the increase of male infertility. The phenomenon is believed to be connected with the presence of substances with hormonal activity – xenoestrogens in human environ- ment. The substances are divided into two groups: man made substances and components occurring naturally – phytoestrogens. Steroids influence not only male and female reproductive systems but also development and function of another tissue. Therefore, this is very important to list of substances with hormonal activity, their potency of acting, the way of expositions. Moreover, there exist the need to define safe doses for human and to recognize effects of chronic exposition.

The Editorial Board
Andrzej Łukaszyk - przewodniczący, Zofia Bielańska-Osuchowska, Szczepan Biliński, Mieczysław Chorąży, Aleksander Koj, Włodzimierz Korochoda, Leszek Kuźnicki, Aleksandra Stojałowska, Lech Wojtczak

Editorial address:
Katedra i Zakład Histologii i Embriologii Uniwersytetu Medycznego w Poznaniu, ul. Święcickiego 6, 60-781 Poznań, tel. +48 61 8546453, fax. +48 61 8546440, email:

PBK Postępby biologi komórki