1. JAN JÁNSKÝ

2. Jan Jásnký Jan Jánský was born on 3 April 1873 in Prague. He died on 8 September in Černošice. Jan was Czech serologist,neurologist and psychiatrist.

3. Life Jánský studied medicine at Charles University in Prague. He was born into a family of merchant. From 1899, he worked in the Psychiatric Clinic in Prague. In 1914, he was named professor Prague Universit. After that he worked as a neuropsychiatrist in a Military Hospital.

4. Death He had angina pectoralis and died of ischaemic heart disease. A memorial board commemorating his stay is located in the house no Černošice 397 th.

5. Findings He is credited with the first classification of blood into the four types (A, B, AB, O) of the ABO blood group system.

6. END Source : www.Wikipedie.cz