Find more information on the Altmetric Attention Score and how the score is calculated. Heparan sulfate (HS) is a cell surface polysaccharide recently identified as a coreceptor with the ACE2 protein ...

*To whom correspondence should be addressed: Division of Molecular Structure and Function, Research Institute, The Hospital for Sick Children, 555 University Ave., Toronto, Ontario, Canada M5G 1X8.