Gets the indices of homologous sera for each antigen in an antigenic map.
See also the function srHomologousAgs() for getting and setting the
homologous antigens reciprocally.
agHomologousSr(map)A list, where each entry is a vector of indices for homologous sera, or a length 0 vector where no homologous serum is present
An acmap object
Other antigen and sera attribute functions:
agAttributes,
agGroups(),
agLabIDs(),
agSequences(),
ptAnnotations,
ptClades,
srAttributes,
srGroups(),
srHomologousAgs(),
srSequences()