|| 14 offprints in original wrappers. Mostly very good. Most have signature of Johannes Holtfreter (developmental biologist). One is an inscribed presentation copy to Holtfreter signed by Ludwik Monne.* Differential Staining of Various Polysaccharides in Sea Urchin Eggs (1950); w/ Sven Harde, Changes in the protoplasmic properties occurring upon stimulation and inhibition of the cellular activities (1952); w/ Sven Harde, On the cortical granules of the sea urchin egg, 1951; w/ Sven Harde, On the formation of the blastocoele and similar embryonic cavities, 1950; w/ David B. Slautterback, The disappearance of protoplasmic acidophilia upon deamination, 1950; Structure and function of neurones in relation to mental activity, 1948; Structural changes of cell resulting from clotting and liquefaction, 1949; The Action of Narcotics and of Hydrating and dehydrating agents on the structure of the cytoplasm, 1947; and several others. Full list on request. Very good.