Science starts with a desire to answer the unanswered; a fascination with what makes us, us. And for many scientists, this feeling stems from a specific question, usually at a young age.

Graham Heieis from Leiden University Medical Centre inherited a good memory from his grandmother and has put it to the test throughout his career in immunology – here, he shares how he stays motivated in an industry where things often don’t turn out the way we expect.

Love Letters to Science is a series of short films in which five scientists share the story of how they fell in love with science – and how it helped them find their collaborators, their people, and their community.

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Find the best markers for immunophenotyping human and mouse immune cells.

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Man-Yee Lee

shares why we should feel optimistic about getting older.


shares his fascination with how we develop – and how science saved his life.


explains how a small discovery made by one scientist can empower us all.


uses science to answer a fundamental question: what makes us human?

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