Dr. Alfredo Quiñones-Hinojosa is the Director of the Brain Tumor Stem Cell Laboratory at Johns Hopkins University School of Medicine.

Twenty years ago, Dr. Quinones-Hinojosa hopped a border fence from Mexico into the United States and became a migrant farm worker, living in the fields in a broken-down camper he bought for $300.

When told he would probably be a farm worker for the rest of his life, he signed up for English classes at a community college, where one of his teachers encouraged him to apply to UC-Berkeley. There, he developed a passion for science, and showed remarkable aptitude.

He went on to Harvard Medical School and graduated with honors, followed by a residency in neurosurgery at UC-San Francisco, where he completed a postdoctoral fellowship in developmental and stem cell biology.

References:
Dr. Alfredo Quinones-Hinojosa. BigThink.com.