The Chronology of Angiostrongylus vasorum (Baillet, 1866), Kamensky, 1905: Infection in Biomphalaria glabrata (Say, 1818)

Figure 4

Histological sections of Biomphalaria glabrata infected with 1000 L1 of A. vasorum. Hematoxylin and eosin staining. (a) Larva (vertical arrow) located in the foot fibromuscular tissue with loss of cellularity and loose appearance of the tissue plus deposit of melanin pigment (oblique arrow) after sixty days of the beginning of infection; (b) larvae (L3) in pedal tissue without evidence of granulomatous structure showing a tissue with very loose aspect sixty days after the beginning of infection; (c) larvae (L3) in conjunctive tissue with loose appearance and presence of well-marked clear space around the larvae sixty days after the beginning of infection; (d) free larva (L3) located in spaces (black asterisk) between the diverticula of the digestive gland (gray asterisk) without the presence of cellularity around after sixty days of the beginning of infection; (e) free larva (arrow) in the renal space (black asterisk) without the presence of cellularity sixty days after the beginning of infection. Magnifications: (a–d): 35 μm; (e): 120 μm.

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