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Figure 2 | BMC Developmental Biology

Figure 2

From: External and internal shell formation in the ramshorn snail Marisa cornuarietisare extremes in a continuum of gradual variation in development

Figure 2

Histological sections of Pt-exposed embryos and respective sketches explaining derection of tissue growth. Arrows indicate directional growth of a tissue, X indicates stop of growth of the respective tissue; black: mantle tissue, red: shell gland, yellow: shell; A: 3-day-old embryo, transverse section through the visceral sac; B: sketch of Figure 2A, frontal view; C: 7-day-old embryo, sagittal section; D: sketch of Figure 2C, left lateral view; E: 9-day-old embryo, transverse section through the visceral sac; F: sketch of Figure 2E, left lateral view; F: foot; L: lobe; LS: larval stomach; MTE: mantle edge; MTG: mantle gap; SH: shell; SHG: shell gland; VS: visceral sac.

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BMC Developmental Biology

ISSN: 1471-213X

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