The blood stem cells that live in bone marrow are at the top of a complex family tree. Such stem cells split and divide down various pathways that ultimately produce red cells, white cells and platelets.
Campus & Community
Penn in the news
Amy Bleakley of the Annenberg Public Policy Center says, “If the goal of the rating system is to shield youth from age-inappropriate behavior and be a tool for parents, I think its effectiveness is in doubt.”
Katherina Rosqueta of the School of Social Policy & Practice’s Center for High Impact Philanthropy is interviewed about effective giving.
Penn’s “India as a Pioneer of Innovation” conference is highlighted.
Tukufu Zuberi of the School of Arts and Sciences is quoted about the influence of former South African president Nelson Mandela.
Chad Dion Lassiter of the School of Social Policy and Practice discusses unprovoked attacks on strangers called the “Knockout Game.”