Literal values, not normalised. 326,269 distinct spellings cover 898,882 claims; only letter case and spacing are merged, so “maize”, “corn” and “Zea mays L.” are three separate entries here.
“Both hemoproteins as major constituents were crystallized from ammonium sulfate solution, and some other chromoproteins, a blue protein and a flavoprotein, were also purified”