Lymph nodes were fixed in 10% neutral buffered formalin and embedded in paraffin. Sections were typically four μm thick and stained with hematoxylin and eosin (H&E). For immunohistochemistry, sections were boiled in citrate-based solution to retrieve antigens and subsequently quenched in 3% hydrogen peroxide. Antibodies used included anti-CD21 (Cat. ab75985, Abcam, Cambridge, MA, USA),
MECA79 (Cat. 53-6036-80, eBioscience, San Diego, CA, USA),
anti-PD-1 (Cat. AF1021, R&D systems, Minneapolis, MN, USA),
anti-CD3 (Cat. ab5690, Abcam),
anti-PAX5 (Cat. sc-1974, Santa Cruz Biotechnology, Dallas, TX, USA),
anti-CD4 (Cat. 14–0042, eBioscience),
anti-CD8 (Cat. 14–0081, eBioscience),
anti-CD138 (Cat. AF3190, R&D Systems) and
anti-HA (Cat. 3724, Cell Signaling Technology). Horseradish peroxidase-coupled secondary antibodies (Vector Laboratories, Burlingame, CA, USA) were used in combination with DAB for visualization. For immunofluorescence staining, sections were stained with Alexa Fluor 488 conjugated anti-GL7 (Cat. 144611, BioLegend, San Diego, CA, USA) and
anti-CD4 (Cat. 14–0042, eBioscience). Secondary antibody for
anti-CD4 was goat anti-Rat IgG (H + L) Alexa Fluor 594 (Cat. A11007, Invitrogen, Carlsbad, CA, USA).
Lee G.J., Jun Y., Yoo H.Y., Jeon Y.K., Lee D., Lee S, & Kim J. (2020). Angioimmunoblastic T-cell lymphoma-like lymphadenopathy in mice transgenic for human RHOA with p.Gly17Val mutation. Oncoimmunology, 9(1), 1746553.