Hematopoiesis in MBL and CLL Versus Healthy Age-Matched Control Subjects

Inclusion Criteria: * Subjects in the CLL cohort who are eligible for these studies will have a clinically established diagnosis of CLL as assessed by flow cytometry and will include subjects who * Remain untreated * Are currently being treated * Who have already been treated * Subjects in the MBL cohort will have a clinically established diagnosis of MBL * Healthy age-matched control subjects * Healthy younger control subjects aged \> 40 years Exclusion Criteria: * Anyone under 40 * Healthy control subjects must not have a diagnosis of CLL or MBL