anal transition zone

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anal transition zone

Abbreviation: ATZ
The histologic junction between the anal squamous epithelium and the rectal columnar epithelium.
See also: zone
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References in periodicals archive ?
Others (28,29) have advocated dividing these tumors into (1) squamous cell carcinoma, analogous to its counterpart elsewhere in the skin, and (2) cloacogenic (transitional, basaloid) carcinoma, supposedly originating from the ATZ mucosa.
41 Most such tumors have a colorectal phenotype and represent tumors originating from the colorectal zone in the upper portion of the anal canal or from the glandular cells of the ATZ mucosa.
8-[micro]g/L ATZ treatment produced 20% more females compared with the control.
CONCLUSIONS: Our study indicates that exposure to low concentrations of ATZ in experimental mesocosms alters gonadal differentiation and metamorphosis in developing R.
43,243 ATZ INVESTMENTS PLC (formerly Block 42 PLC) Cash Flow Statement
ATZ and its degradates are the most commonly detected pesticide(s) in ground and surface waters (Aaronson et al.
It is a confirmation of our technology development program and the successful cooperation with ATZ.
ATZs are niche consumer clusters of approximately 3,500 households each, to which only ADVO can deliver its shared, or cooperative, mail program.
Crop protection products included in the corn herbicide qualifying list are Accent Gold(1), Accent(1), Basis Gold(1), Basis(1), Leadoff(1), Steadfast(1), Dual(2), Bicep(2), Liberty(3) and Liberty(3) ATZ.
CALGARY, Alberta--(BUSINESS WIRE)--MARCH 13, 1995--ATC ENVIRONMENTAL(Alberta Stock Exchange: ATZ ) Nate Feldman, President of ATC Environmental Group Inc.