Bracke J W, Cruden D L, Markovetz A J
Appl Environ Microbiol. 1979 Nov;38(5):945-55. doi: 10.1128/aem.38.5.945-955.1979.
A morphological study employing scanning and transmission electron microscopy was made by the alimentary tract of the American cockroach, Periplaneta americana L. A. complex microbiota of diverse morphology, which could not be readily dislodged, was observed and found to be restricted to the hindgut, particularly the colon. Numerous filamentous forms were noted, and some are described, including the morphologically distinct Methanospirillum. Flora was noted attached to the cuticular lining and cuticular filaments of the colon, and several spiral forms were observed in the luminal contents from the colon.
利用扫描电子显微镜和透射电子显微镜对美洲大蠊（Periplaneta americana L.）的消化道进行了形态学研究。观察到一组形态多样、不易去除的复杂微生物群，发现其局限于后肠，尤其是结肠。记录到许多丝状形态，并描述了其中一些，包括形态独特的甲烷螺菌。注意到菌群附着在结肠的角质层内衬和角质丝上，并且在结肠的管腔内容物中观察到几种螺旋形态。
