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Dmi8 automated inverted microscope

Manufactured by Leica

The DMi8 is an automated inverted microscope designed for advanced imaging applications. It features high-quality optics, motorized components, and integrated control software to enable precise and efficient sample examination.

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5 protocols using dmi8 automated inverted microscope

1

Microscopy Slide Preparation and Imaging

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Cells were pelleted and washed with 1× PBS solution for preparation of microscope slides. A thin 2% (w/v) agarose pad was prepared on a glass slide and 1 ​μL of cell suspension was added on top and air dried for about 5 ​min before placing a glass cover slip (Ke et al., 2016 (link)). Imaging was performed with a DMi8 automated inverted microscope (Leica Microsystems, #11889113) equipped with a CCD camera (Leica Microsystems, #DFC300 G), and a TXR (Leica Microsystems, #11525310) and YFP (Leica Microsystems, #11525306) filter cube. The Z-stack of captured images was processed in a blind deconvolution to remove out of focus fluorescence with the LAS X software version 3.3.3.16958 (Leica Microsystems, #11640612) with 3D deconvolution package (Leica Microsystems, #11640865).
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2

Microscopic Analysis of Microbial Cultures

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Microscopy was performed using DMi8 automated inverted microscope (Leica Microsystems, #11889113) equipped with a CCD camera (Leica Microsystems, #DFC300 G), and a LED405 (Ex 375–435 nm, Em 450–490 nm, exposure time – 10 ms, gain 2) and YFP (Ex 490–510 nm, Em 520–550 nm, exposure time – 5ms, gain 1) filter cube. 1 μL of cultures were spotted on agarose pads (2 % w/v, 1 mm thick).
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3

Microscopic Imaging of Bacterial Cells

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Cells were pelleted and washed with 1× PBS solution for preparation of microscope slides.
A thin 2 % (w/v) agarose pad was prepared on a glass slide and 1 µL of cell suspension was added on top and air dried for about 5 min before placing a glass cover slip (Ke et al., 2016) (link).Imaging was performed with a DMi8 automated inverted microscope (Leica Microsystems, #11889113) equipped with a CCD camera (Leica Microsystems, #DFC300 G), and a TXR (Leica Microsystems, #11525310) and YFP (Leica Microsystems, #11525306) filter cube. The Z-stack of captured images was processed in a blind deconvolution to remove out of focus fluorescence with the LAS X software version 3.3.3.16958 (Leica Microsystems, #11640612) with 3D deconvolution package (Leica Microsystems, #11640865).
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4

Live Chromatin Imaging with SiR-Hoechst

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Cells were placed in a 37 °C humid incubator by controlling the temperature and CO2 flow using H201-couple with temperature and CO2 units. Live chromatin imaging was performed using a DMI8 inverted automated microscope (Leica Microsystems) featuring a confocal spinning disk unit (CSU-X1-M1N, Yokogawa). An integrated laser engine (ILE 400, Andor) was used for excitation with a selected wavelength of 647 nm and 140 mW as excitation power. A 100× oil immersion objective (Leica HCX-PL-APO) with a 1.4 NA was chosen for a high-resolution imaging. Fluorescence emission of the SiR-Hoechst was filtered by a single-band bandpass filter (FF01-650/13-25, Semrock, Inc.). Image series of 150 frames (5 fps), with exposure time of 150 ms per frame, were acquired using Metamorph software (Molecular Devices) and detected using sCMOS cameras (ORCA-Flash4.0 V2) and 1 × 1 binning, with sample pixel size of 65 nm. All series were recorded at 37 °C.
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5

Automated Confocal Imaging of DNA Dynamics

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DNA images were acquired using a DMI8 inverted automated microscope (Leica Microsystems) featuring a confocal spinning disk unit (CSU-X1-M1N, Yokogawa). Integrated laser engine (ILE 400, Andor) with a selected wavelength of 647 nm (140 mW) was used for excitation. Samples were imaged with an oil immersion objective (Leica HCX-PL-APO 100x/1.4 NA). Fluorescence emission of the SiR–Hoechst was filtered by a single-band bandpass filter (FF01-650/13-25, Semrock, Inc.). Image series of 150 frames (5 fps) were acquired using Metamorph software (Molecular Devices), and detected using sCMOS cameras (ORCA-Flash4.0 V2) and (1 × 1 binning), with sample pixel size of 65 nm. All series were recorded at 37°C and in a humid chamber by controlling the temperature and CO2 control flow using H201—couple with temperature and CO2 units.
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