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But in Baltimore , Dr. Vogelstein , a young molecular biologist at Johns Hopkins Medical School , believed Dr. Knudson was right , and set out to repeat the Cavenee experiment in cells from other cancers .
 Baltimore, Vogelstein, Johns Hopkins Medical School, Knudson, Cavenee
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 Baltimore, Vogelstein, Johns Hopkins Medical School, Knudson, Cavenee