4DNS:
reference: Various cross-reactivity of the grass pollen group 4 allergens: crystallographic study of the Bermuda grass isoallergen Cyn d 4., Huang TH, Peng HJ, Su SN, Liaw SH, Acta Crystallogr D Biol Crystallogr. 2012 Oct;68(Pt 10):1303-10. Epub 2012 Sep, 13. PMID: 22993084

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