The scientist’s investigation covers issues in Pathology, Cancer research, Internal medicine, Cancer and Breast cancer. Jahn M. Nesland interconnects Cell and Melanoma in the investigation of issues within Pathology. His Cancer research research integrates issues from Cell culture, Cancer stem cell, Molecular biology and Cell cycle, Gene.

The Internal medicine study combines topics in areas such as Gastroenterology, Endocrinology and Oncology. His research investigates the link between Breast cancer and topics such as Survival rate that cross with problems in Adenocarcinoma. The study incorporates disciplines such as Ovarian carcinoma, Breast carcinoma and Survival analysis in addition to Carcinoma.