Inserting BioSources
The add_biosource command requires a name and description; the parameter extra_metadata is optional:
extra_metadata = {"term_url":
"http://www.ebi.ac.uk/ontology-lookup/browse.do?ontName=BTO&termId=BTO%3A0000099"}
(status, bs_id) = server.add_biosource("Astrocy",
"astrocytes, Astrocy is the same as cell line NH-A", extra_metadata, user_key)