P443: A POOLED FOCUSED IN VIVO CRISPR-CAS9 SCREENING IN IMMUNOCOMPETENT MICE ALLOWS IDENTIFICATION OF IMMUNE CHECKPOINTS RELEVANT FOR LEUKEMIC STEM CELLS

• Chantal Bachmann,
• Stefan Forster,
• Adrian Ochsenbein

Affiliations

Chantal Bachmann

1 Inselspital, Bern University Hospital, Department of Medical Oncology, Bern, Switzerland

Stefan Forster

1 Inselspital, Bern University Hospital, Department of Medical Oncology, Bern, Switzerland

Adrian Ochsenbein

1 Inselspital, Bern University Hospital, Department of Medical Oncology, Bern, Switzerland