Adler was known for his generosity and modesty and often did not make a record of his work , so some of what happened next is uncertain .
Adler and another scientist published the first research using Syrian hamsters in 1931 .
Adler was known for Adler 's generosity and modesty and often did not make a record of his work , so some of what happened next is uncertain .
Adler and another scientist published the first research using Syrian hamsters in 1931 .