Egg sacs, spiderlings and dispersal - The Australian Museum
Fig. 36—Necrotic Tips of Fetal Sacs, Swine, /, /a, Necrotic embrj^os in totally necrosed fetal sacs ; 2, 2, normal embryos within amnion, the allantois having been opened ; 4, necrotic
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Alveoli: Function, Lung Anatomy, and Causes of Damage
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