146 
Entamoeba histolytica 
Fig. 39. Quadrinucleate amoeba, which has excysted. 
Fig. 40. Small uninucleate amoebula, probably derived from a quadrinucleate amoeba seen in 
fig. 39. 
Figs. 41-53. Degenerate vegetative amoebae. 
Figs. 41, 42. First stage of degeneration. 
Figs. 43, 44. Irregular divisions of the nuclei to form multinucleate organisms. 
Figs. 45, 46. Disintegration of the nuclear membrane. 
Figs. 47, 48. Amoebae in which nucleus has broken up into refractile granules. 
Figs. 49, 50. Bud formation. 
Fig. 51, 52. Degenerate nuclei lying side by side undergoing degeneration and disintegration. 
Fig. 53. Degenerate amoeba with disintegration nucleus. 
Fig. 54. Association of degenerate amoebae; specimen from the human intestine. 
Fig. 55. Similar association of degenerate amoebae and leucocytes found in a tubule of the large 
intestine of the eat. 
Figs. 41, 43, 46, 47, 49, 53 are drawn from culture amoebae; figs. 42, 44, 45, 48, 50, 51 and 52 
are drawn from specimens in the human intestine. 
