Study for Evaluation of Efficacy and Safety of SH L 749 to Indolent B-cell Non-Hodgkin's Lymphoma

Inclusion Criteria: * Platelet counts of \>/= 100,000/mm3 * Absolute neutrophil counts of \>/= 1,200/mm3 * Bone marrow involvement \< 25% Exclusion Criteria: * Patients who received hematopoietic stem cell transplantation, including bone marrow transplantation, peripheral blood stem cell transplantation, etc. * Patients presenting with marked bone marrow hypocellularity (any suspected bone marrow hypocellularity should be confirmed by bone marrow biopsy) * Patients with previous myocardial infarction within the past 1 year, with heart disease that requires treatment or with pulmonary dysfunction * Patients with serious concomitant diseases (cardiac failure, renal failure, etc.)