what source the " humanized antibody" contains?
check out this link: hope that answers your question, if I understood it correctly
If you are asking for sources of humanized Abs, ~3 kinds of mice are available for researchers to create their own specificities - but I think its patented.
Many commercial drugs use humanized Abs or chimeric humanized Abs grown in cell culture systems - e.g. against rheumatoid arthritis.