title: Erratum to: The effect of aging on the frequency, phenotype and cytokine production of human blood CD4 + CXCR5 + T follicular helper cells: comparison of aged and young subjects.
abstract: [This corrects the article DOI: 10.1186/1742-4933-11-12.].
authors.affiliation: Department of Pathology and Laboratory Medicine, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 China.
authors.forename: Maohua
authors.initials: M
authors.lastname: Zhou
authors.affiliation: Department of Pathogenic Biology and Immunology, Guangzhou Hoffmann Institute of Immunology, School of Basic Sciences, Guangzhou Medical University, Guangzhou, 510182 China.
authors.forename: Ruqiong
authors.initials: R
authors.lastname: Zou
authors.affiliation: Department of Pathology and Laboratory Medicine, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 China.
authors.forename: Huiquan
authors.initials: H
authors.lastname: Gan
authors.affiliation: Department of Pathogenic Biology and Immunology, Guangzhou Hoffmann Institute of Immunology, School of Basic Sciences, Guangzhou Medical University, Guangzhou, 510182 China.
authors.forename: Zhimei
authors.initials: Z
authors.lastname: Liang
authors.affiliation: Department of Pathogenic Biology and Immunology, Guangzhou Hoffmann Institute of Immunology, School of Basic Sciences, Guangzhou Medical University, Guangzhou, 510182 China.
authors.forename: Fujun
authors.initials: F
authors.lastname: Li
authors.affiliation: Department of Pathology and Laboratory Medicine, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 China.
authors.forename: Ting
authors.initials: T
authors.lastname: Lin
authors.affiliation: Department of Pathology and Laboratory Medicine, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 China.
authors.forename: Yanfei
authors.initials: Y
authors.lastname: Luo
authors.affiliation: Department of Pathology and Laboratory Medicine, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 China.
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Cai
authors.affiliation: Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150 China.
authors.forename: Fang
authors.initials: F
authors.lastname: He
authors.affiliation: Department of Pathogenic Biology and Immunology, Guangzhou Hoffmann Institute of Immunology, School of Basic Sciences, Guangzhou Medical University, Guangzhou, 510182 China.
authors.forename: Erxia
authors.initials: E
authors.lastname: Shen