title: Introduction and acknowledgements
authors.affiliation: Laboratory of Cell Biology, Institute of Biomedical Sciences Abel Salazar, State University of Porto, Lg. Prof. Abel Salazar 2, 4099-003, Porto, Portugal.
authors.initials: M
authors.lastname: Sousa
authors.initials: A
authors.lastname: Barros
authors.initials: J
authors.lastname: Tesarik