Correction to: A nanobody-horseradish peroxidase fusion protein-based competitive ELISA for rapid detection of antibodies against porcine circovirus type 2

Correction to: J Nanobiotechnol (2021) 19(1):34 https://doi.org/10.1186/s12951-021-00778-8

The original version of this article [1], unfortunately contained some errors.

In the Materials and methods, Subheading ‘Preparation of rabbit anti-camel IgG antiserum’, Paragraph 1, Sentences 7 should read: “Freund’s complete adjuvant (Sigma-Aldrich, USA) was used for the first immunization, followed by Freund’s incomplete adjuvant.”

In the Materials and methods, Subheading ‘Panning and identification of PCV2‑Cap protein specific

Nanobodies’, Paragraph 1, Sentences 3 should read:

“On the next day, after washing with PBS containing 0.05% Tween-20 (PSB’T, V/V) and blocking with PBS’T containing 2.5% skim milk (SM-PBS’T, W/V), 5×10¹⁰ PFU rescued phage in 100 µL SM-PBS’T was added and incubated for 2 h at RT.”

The authors apologize for these errors.