Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


A microtome for cutting very thin sections of material for use in electron microscopy.

ul′tra·mi·crot′o·my (-mī-krŏt′ə-mē) n.


(Biology) microscopy a microtome used for cutting sections for examination by an electron microscope


(ˌʌl trəˈmaɪ krəˌtoʊm)

a microtome capable of producing very fine slices of tissue or cellular specimens for examination by electron microscope.
Mentioned in ?
References in periodicals archive ?
Samples for transmission electron microscope (TEM) analysis were prepared by cryocutting using an ultramicrotome (Leica, Ultracut UCT) prior to analysis.
The University of Glasgow has a requirement to purchase a state of the art ultramicrotome for ultrathin sectioning of biological samples with a stereo microscope carrier, anti-vibration table and a touch-sensitive-control unit and a LED-illumination.
High-quality transverse surfaces of the bondline were prepared for nanoindentation with a diamond knife fit in an ultramicrotome (Jakes et al.
Semithin transverse sections (1 [micro]m) were cut with an automatic ultramicrotome (Leica Ultracut R, Austria) and stained with filtered 1% toluidine blue.
Sections of 2-6 [micro]m in thickness were cut from the resin blocks using a Sorvall MT-2b ultramicrotome, mounted on microscope slides, stained with TBO (Ruzin.
Ultra-thin sections were obtained using diamond knives with a Leica EM UC6 ultramicrotome (Leica Co.
Blocks with specific areas were then chosen and sectioned with glass knives on a KBV ultramicrotome.
The SFTSV-infected Vero cell monolayer was fixed according to described methods (11) and cut on ultramicrotome (RMC MT-XL) at 65 nm.
Afterwards, the blocks were shaped as trapezes, having 1 mm on each side and then sliced into sections using an ultramicrotome.
Specimens were thick sectioned for the presence of the archegonia and thin-sectioned with a diamond knife on an Ultracut-E ultramicrotome (Reichert-Jung, Germany).