‘This function is changing not only what we know, but how we take into account the interplay of structure also, dynamics and function in molecular systems,’ said David A. Tirrell, Ph.D., a Caltech professor and previous chair of the Division of Chemistry and Chemical Engineering. Tirrell adds that the advances made by Zewail’s group ‘are yielding qualitatively new insights in to the atomic and molecular origins of complicated chemical substance, physical, and biological behavior.’ Zewail pioneered femtochemistry, the study of ultrafast chemical processes on the femtosecond timescale using special lasers.Clinical findings ; examination of kidney-biopsy specimens in Patients A-II-3, B-II-9, and C-II-3 showed extramedullary hematopoiesis . Nucleated reddish colored cells, indicating significant bone marrow damage or stress, were present in the peripheral blood of the kids . Molecular and genetic evaluations were bad for known congenital neutrophil defects. Two of the affected children underwent hematopoietic stem-cell transplantation from matched related donors; both passed away of infections after failed engraftment.