<qa>  What is the risk of neutropenic infection?Transplant patients typically would have 24 cycles of chemotherapy prior to admission for transplant. As such they have more chance of developing neutropenic infection and IA. Therefore we would perform a baseline bronchoscopy and washing BAL to assess the cytokine profile at admission and ensure that no infection is apparent before the initiation of transplant conditioning. A small amount of the BAL sample would be frozen and stored for future studies. Additional bronchoscopy may be done later during admission for both transplant and non-transplant patients if the clinical situation warrants it according to our current clinical practice. 