Long-time exposure to pesticides via inhalation may cause moderate to severe blood toxicity and reduction in the total number of bone marrow cells leading to several degenerative diseases like aplastic anaemia researchers at the School of Tropical Medicine (STM) here say. The researches arrived at the conclusion from procedures performed on mice.As a whole exposure to pesticides reduced the total number of bone marrow cells or in other words suppressed them Sujata Law assistant professor (Stem Cell Biology) at STM's Department of Medical Biotechnology told IANS. Bone marrow is the soft flexible tissue found in long bones such as the thigh bone