Gertine received her Bachelor of Science in 2008. During her first bachelor internship (2007) she studied the role of the MN1 Oncogene and the leukemia-Associated Fusion Gene MN1-TEL under the supervision of Magda Meester-Smoor. In her second internship she studied the interaction between mDC and NK cells during HBV infection (2007-2008) under supervision of Eric Tjwa. After her second internship she started to work as a technician at the Department of Gastroenterology & Hepatology.