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The composition of phosphate granules in the digestive glands of marine prosobranch gastropods: variation in relation to taxonomy

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Academic year: 2021

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Figure 1. Melarhaphe neritoides (Tinside, Plymouth Sound). A. Scanning electron micrograph (backscattered image) of a group of P-granules in digestive gland tissue prepared by the 'pate' method
Figure 2. A. Mean relative peak efficiencies obtained using the XRMA system in analysing droplets (n = 10) of an isoatomic solution of Mg, P, K, Ca, Fe and Zn (no peak is shown for Mn as this was estimated by extrapolation)
Table 1. Relative concentrations of Mg, K, Ca, Mn, Fe and Zn in phosphate granules occurring in the digestive glands of gastropods from various local- ities
Figure 3. Examples of the four types of P-granule composition recognised by differences in mean relative peak heights for elements after XRMA efficiency adjustment shown in Fig
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