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Korean J Parasitol > Volume 1(1):1963 > Article

Original Article
Korean J Parasitol. 1963 Jun;1(1):29-36 . English.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1963.1.1.29
Copyright © 1963 by The Korean Society for Parasitology
Experimental study on bionomics of Giardia Part I. Localization and morphological variation of Giardia muris in various parts of the small intestine of laboratory mice
Keun Tae Lee, M.D.
Department of Parasitology, Yonsei University, College of Medicine, Korea.
Abstract

1. The localization of Giardia muris was determined in 8 Giardia-infected laboratory mice that were fed on a normal diet.

  • a. The average total length of small intestine of the mice was 38.3 cm. Among 8 sections (to divide into 8 part from pylorus to cecal junction :Sect. I, Sect. II, ...... Sect. VIII), the optimum habitat ranged Sect. IV to Sect. V(from 14.5 cm to 24.4 cm posterior to the pylorus.

  • b. Distribution rate of Giardia muris in posterior part of small intestine was higher than that in anterior part.

  • c. The bile duct of 8 mice were examined, but no Giardia was found.

  • d. The cyst of Giardia muris were found at the part posterior to the Sect. VII.

2. The result of a comparison between varying average body length and body breadth of Giardia muris drawn at random from different part of small intestine of 5 laboratory mice was as follows:

  • a. Maximum average dimension of the body length of the trophozoite was found at the part of Sect. IV and minimum average value was observed at the part of Sect. VIII.

  • b. On average dimension of body length of the trophozoite, no significant difference was obtained among the parasites at Sect. II, Sect. IV, Sect. VI, but significant small dimension value was observed aat Sect. VIII.

3. Coincidental figures on the part where the maximum distribution rate was shown and the part where the maximum average dimension of the body length of the trophozoite were considered as indicating the optimum site of the parasite.

Figures


Fig. 1
Dimensions on body length(L) and body breadth(B) of Giardia muris.

Tables


Table 1
Localization of Giardia muris in Small Intestine of Laboratory Mice


Table 2
Distribution Rate of Giardia muris in Each Section of Small Intestine of Laboratory Mice


Table 3
A Comparison between Varying Average Body Lengths of Giardia muris Drawn at Random from Different Part of Small Intestine of Laboratory Mice


Table 4
A Comparison between Varying Body Lengths of Giardia muris Drawn at Random from Different Part of Small Intestine of Five Laboratory Mice (N=50 in each section of small intestine)


Table 5
A Comparison between Varying Average Body Lengths of Giardia muris Drawn at Random from Different Part of Small Intestine of Laboratory Mice


Table 6
A Comparison between Varying Average Body Breadths of Giardia muris Drawn at Random from Different Part of Small Intestine of Laboratory Mice


Table 7
A Comparison between Varying Body Breadths of Giardia muris Drawn at Random from Different Part of Small Intestine of Five Laboratory Mice (N=50 in each section of small intestine)


Table 8
A Comparison between Varying Average Body Breadths of Giardia muris Drawn at Random from Different Part of Small Intestine of Laboratory Mice

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