hemoglobin crystals from over 100 species
... that in 1909, hemoglobin crystals from over 100 species were used to relate biological taxonomy to molecular properties?
... that in 1909, <b id="mwXg"><a href="./List_of_biophysically_important_macromolecular_crystal_structures" id="mwXw" rel="mw:WikiLink" title="List of biophysically important macromolecular crystal structures">hemoglobin crystals from over 100 species</a></b> were used to relate biological taxonomy to molecular properties?