PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 3911972

Some statistical aspects of sampling in morphometry.

M S Dunnill
View original source ↗Export metadata ↓

Abstract

Morphometry requires, in addition to the accurate counting of points, intersections and transections, meticulous attention to sampling. Methods are described and discussed for ensuring that adequate samples are obtained for a given standard error. For all situations in which stratification is used, the importance of increasing the number of the early strata for reducing the variance is emphasized.

Explore related subjects

Histological TechniquesHumansMicroscopyResearch DesignSpecimen HandlingStatistics as TopicJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

M S Dunnill. 1985. Some statistical aspects of sampling in morphometry.. https://pubmed.ncbi.nlm.nih.gov/3911972/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed1999

Confocal laser scanning microscopy: A nondestructive subsurface histotomography of healthy human bone.

Microscopy of bony tissue usually requires special treatment for decalcification and processing of thin sections. Confocal laser scanning microscopy (CLSM) allows the nondestructive histotomography of organic hard tissue. The aim of this study was to visualize healthy human bone structures and to correlate identical areas in CLSM and conventional light microscopy. Each sample of healthy human lower jaw (n = 20) was divided into three parts: (1) fresh, untreated bony blocks studied by CLSM; (2) MMA-embedded thin sections (without decalcification), HE stained and studied by CLSM and conventional light microscopy (correlation of identical areas); (3) decalcificated, HE stained, histological sections studied by conventional light microscopy. In untreated bony blocks, microstructures such as osteocytes and lamellae were identified by CLSM. These structures could be correlated with conventional light microscopy. In CLSM, subcellular structures cannot yet be interpreted, whereas cytoplastic processes of osteocytes were seen with high contrast. With CLSM, nondestructive histology of cortical bone can be obtained. The risk of artifacts due to pretreatment is minimized, and subsurface visualization does not affect the interpretation.

Histological Techniques↗
PubMed1999

Double embedding broad thin leaves in paraffin.

Paraffin pellets were melted in 24x24x5 mm stainless steel base molds. Specimens of leaves, 18x18 mm, were fixed, dehydrated and infiltrated with paraffin. Two specimens were transferred into molten paraffin on their laminar surfaces in a base mold and moved quickly onto a cold surface to cast them in a shallow block of paraffin. Each block was then scored with a razor blade, broken into two primary blocks, and trimmed to 20x9 mm with 5 mm flat edges. Each primary block was immersed upright on its long edge in a 22x22x20 mm Peel-A-Way embedding mold containing molten paraffin. The leaf edge was held centrally in the mold while moving the double embedment onto a cold surface. In this secondary block, the leaf specimen stood perpendicular to the sectioning surface in perfect orientation for transverse ribbon sectioning. The two phases of paraffin bonded well.

Histological Techniques↗