The phrase "redundant role" refers to a job or position that is no longer needed, as its responsibilities can be fulfilled by someone or something else. Full definition
To identify unique or redundant roles for gamma (c) cytokines in naive CD4 (+) T cells, we compared monoclonal populations of CD4 (+) T cells from TCR - Tg mice that were gamma (c)(+), gamma (c)-LRB--), CD127 -LRB-- / --RRB- or CD122 -LRB-- / --RRB-. (science.institut-curie.org)
Carried out extensive SAP role analysis and identified redundant roles. (jobhero.com)