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Towards economy of effort in quantitative ultrastructural pathology: Efficient sampling schemes for studying experimental carcinogenesis
Author(s) -
Mayhew T. M.,
White F. H.,
Gohari K.
Publication year - 1982
Publication title -
the journal of pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.964
H-Index - 184
eISSN - 1096-9896
pISSN - 0022-3417
DOI - 10.1002/path.1711380207
Subject(s) - sampling (signal processing) , ultrastructure , carcinogenesis , pathology , biology , medicine , computer science , cancer , genetics , filter (signal processing) , computer vision
Abstract Hamster cheek pouch mucosa was painted with DMBA in order to compare samples of epithelium at different pathological stages of carcinogenesis. Stereological methods were applied to ultrathin sections of tissue to estimate one ultra‐structural index of change, the surface ratio of lamina densa compared with the overlying plasma membrane of cells in stratum basale. Analysis of variance techniques were then employed to isolate and quantify the contributions which different levels of sampling (animals, tissue blocks, microscopic fields) made to the total observed variation in this surface ratio. Economical sampling schemes for future use were calculated from these sampling variances by taking into account the relative costs at each sampling level. Though illustrated by means of the hamster cheek pouch‐DMBA model, our results are pertinent to many other experimental models for quantitative histopathology.