This handout photo taken on February 7, 2024 and released by the University of Massachusetts Medical School on October 7, 2024 shows Victor Ambros, Silverman Professor of Natural Science, posing for a photo in Worcester, Massachusetts. US scientists Victor Ambros and Gary Ruvkun won the Nobel Prize in Medicine on October 7 for their discovery of microRNA and its role in how genes are regulated. (Photo by Faith NINIVAGGI / UNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / FAITH NINIVAGGI / UNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS (Photo by FAITH NINIVAGGI/UNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL/AFP via Getty Images)