[Histonet] Gram Control

enrriq88 <@t> yahoo.com enrriq88 <@t> yahoo.com
Sun Jun 14 11:23:07 CDT 2009

actinomycosis and nocardiosis, respectively. Actinomyces israelii are gram-positive bacillary and branching forms that are referred to as "higher" bacteria. These organisms occur as parasites in humans and other animals. In tissues, they form hard "sulfur" granules. They need blood for growth on media.

Nocardia asteroides are also gram-positive, filamentous "higher" bacteria. Fragments of hyphae appear as bacilli (rod-shaped bacteria) or cocci (spherical bacteria). Many strains are not easily decolorized by acids (acid-fast). They are often found in soil, and grow well on ordinary media.
In addition, the pathophysiology of this microorganism in other to be present in appendix tissue needs either a systemic infection in place or a post-surgical granulomatous reaction occurring at same time. All this blows out any possibility to find them in normal appendix. I hope this help you.
Jaime E Plata

--- On Sat, 6/13/09, Gomez, Milton <milton.gomez <@t> aruplab.com> wrote:

From: Gomez, Milton <milton.gomez <@t> aruplab.com>
Subject: [Histonet] Gram Control
To: "Histonet" <Histonet <@t> lists.utsouthwestern.edu>
Date: Saturday, June 13, 2009, 5:01 PM

Will a normal human appendix demonstrate Gram + and negative bacteria, and also Filaments of Nocardia and Actinomyces?

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