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  • Title: Human otoconial crystal growth. An approach from morphological and morphometric data.
    Author: Sánchez-Fernández JM, Rivera-Pomar JM, Tello MJ.
    Journal: ORL J Otorhinolaryngol Relat Spec; 1989; 51(2):108-15. PubMed ID: 2710538.
    Abstract:
    The otoconium genesis was evaluated by morphometric procedures using transmission and scanning electron-microscopic techniques for human fetuses of 50, 110, 134, 173, 210, 220 and 232 mm crown-rump length. Different otoconial crystalline habits were found. For the elongated otoconia (hexagonal prism) different parameters were measured: (1) the mean cleavage angle value of the terminal rhombohedron was 102 (SD 0.65), which was independent of the fetal age; (2) large and short axes show a linear growing law in function of the fetal age, and (3) the otoconial volume grows following a quadratic law. A hypothesis about the physicochemical growth conditions is postulated.
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