par Van Gansen, Paulette
Référence Nature (London), 186, 4725, page (654-655)
Publication Publié, 1960
Référence Nature (London), 186, 4725, page (654-655)
Publication Publié, 1960
Article révisé par les pairs
Résumé : | THE cuticle of the earthworm's gizzard is generally thought to be chitinous ; but there was no experimental evidence for this view, until the observation by Rudall1, who obtained an X-ray diffraction diagram similar to that found in Aphrodite bristles previously described by Lotmar and Picken 2 as a modified chitin (β-chitin). Although after purification he obtained a different diagram, he nevertheless concluded that the gizzard membrane was probably chitinous in nature. This identification is much less convincing in view of the fact that the structural proteins are always found together with a certain amount of polysaccharides3. © 1960 Nature Publishing Group. |