These programs are for research in the biomedical sciences:
https://gradstudies.musc.edu/programs/summer-program/undergraduate (Medical University of South Carolina)
https://urf.columbia.edu/fellowship/summer-undergraduate-research-program-surp-sloan-kettering (Columbia)
https://grad.uiowa.edu/biomedical-scholars-summer-undergraduate-research-program (University of Iowa)
https://endure.wustl.edu/apply/ (Washington University in St. Louis)
https://alleninstitute.org/careers/internships-and-postbac/#interns-postbac-listing (Allen Brain Institute)
https://www.stemm-hear.bme.jhu.edu/ (A hearing research specific program at multiple institutions)