[Evaluation of the activity maintaining the growth of granulocyte- monocyte colonies in the calf fetal sera of Polish production]. / Ocena aktywnosci podtrzymujacej wzrost kolonii granulocytarno-monocytarnych w cielecych surowicach plodowych krajowej produkcji.

ABSTRACT

Calf fetal serum is an important component added to the medium used for culturing granulocytic-monocytic colonies. Its composition decides on the serum biological activity and ability to maintain the growth of the said colonies. The growth of granulocytic-monocytic colonies in the presence of various sera served for evaluation of their activity. It was found that calf fetal sera of the Polish origin are characterized by the favourable activity and may replace similar, foreign made sera. The highest biological activity maintaining the growth of the granulocytic-monocytic colonies exhibit sera obtained from a 7-month or younger calf fetuses.