“Acta Haematologica Polonica” (AHP) is a peer-reviewed, English language, gold open-access journal. It is the official bimonthly of the Polish Society of Haematologists and Transfusiologists as well as the Institute of Haematology and Transfusion Medicine. The Journal has been associated with haematology and transfusion since 1970. AHP publishes original research articles, clinical vignettes, and reviews. "Acta Haematologica Polonica" covers areas of physiology and pathology in hematology and transfusion medicine, among other leucocytes, erythrocytes, platelets, immune system, mechanisms of hemostasis and clinical aspects of haematological malignancies. Journal publishes: original studies, reviews, expert guidelines, short communications, clinical vignettes, letters to the Editor, and editorials.