Complex sentence: Haematopoietic stem cell (CD34), constitutes 0.01% of the cord blood components and its first successful transplantation was done in a patient with Fanconi anaemia in 1989.
Split into simpler sentences: Haematopoietic stem cell (CD34), constitutes 0.01% of the cord blood components. First successful cord blood haematopoietic stem cell transplantation was done in a patient with Fanconi anaemia in 1989.