Essays / Medical Laboratory Technology - how to write "Field of specialization studied in the past" [2]

Hi, I plan to study M.Sc Medical Microbiology at Mahidol university in Thailand. in the application form, they want "Field of specialization studied in the past" which is in my case Medical Laboratory Technology .what should I write exactly? (they want it to be detailed)I can write what I have learned in my undergraduate course of Medical Laboratory Technology, but is it what they want? how to divide the essay?