Cell Biology of Virus Entry
Ari Helenius Part 1: Properties of viruses and their families are described. Using examples of three different viruses, Helenius illustrates diverse methods of virus entry. Suitable for an undergraduate or graduate virology class or a class studying endocytosis.

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Virus Internalization
Richard Losick Part 2: Following surface binding, viruses are internalized by endocytosis. Endocytosis occurs via numerous mechanisms and Helenius discusses experiments showing that viruses take advantage of these multiple pathways. This segment is also suitable for an undergraduate or graduate virology class or a class studying endocytosis.