Brian Murphy

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William P. Murphy Jr., medical innovator of vinyl blood bags, dies at 100

The problem was how to replace bulky and fragile glass blood containers. Dr. Murphy tested out the new vinyl bags near the front lines of the Korean War.

The Rev. Stephen Pieters, who helped shift views on AIDS, dies at 70

His 1985 interview, conducted by televangelist Tammy Faye Bakker, was considered a groundbreaking moment in changing public perceptions on AIDS

LeRoy Carhart, abortion doctor whose battles reached Supreme Court, dies at 81

Dr. Carhart faced threats and protests as one of the nation’s few providers of late-term abortions.

Jiang Yanyong, doctor who exposed China’s SARS coverup, dies at 91

The Chinese state turned against Dr. Jiang when he called for accountability over the 1989 crackdowns in Tiananmen Square.

Francisco Ayala, biologist who bridged science and faith, dies at 88

Dr. Ayala resigned his university position amid sexual harassment allegations, which he denied and blamed on his expressive manners as a “European gentleman.”

Paul Berg, pioneer in gene splicing who led way for biotech, dies at 96

Dr. Berg, winner of the 1980 Nobel Prize in chemistry, was also troubled by the potential risks of gene manipulation in the early years.

Dennis O’Leary, doctor who updated world after Reagan shooting, dies at 85

Dr. O’Leary had no experience dealing with media. He learned fast as the hospital spokesman after President Ronald Reagan was shot in 1981.

J. Richard Steadman, orthopedic guru for elite athletes, dies at 85

Dr. Steadman introduced surgical innovations including harnessing the body’s stem cells to stimulate growth of new cartilage in injured knees.

David Allis, researcher who explored ‘on-off’ switch in genes, dies at 71

Dr. Allis’s work opened new ways to treat some blood cancers and stirred wider medical research into gene-targeting drugs for other diseases.

Carol Leigh, who sought greater rights for sex workers, dies at 71

At a conference in 1982, Ms. Leigh coined the phrase “sex work” that became part of the global lexicon of researchers, writers and activists.