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Cover of an old red book on a black background. The book is unfolded. Side view.
superior view of heart showing opening of aorta, superior vena cava, pulmonary trunk with related valve
Old book journal cover, with worn marbled paper pattern, scuffed leather spine and corner
Notoedres cati under the microscope. Notoedric mange, also referred to as Feline scabies, is a highly contagious skin infestation caused by an ectoparasitic and skin burrowing mite Notoedres cati.
Photomicrograph of rotifer, probably Rotaria rotatoria. Rapidly rotating cilia at top of head, internal organs visible. Green circles are algae. Live specimen. Original image at 40X, wet mount, transmitted brightfield illumination. Indistinct image due to motion blur of live specimen and very shallow depth of field of brightfield illumination.
Freshwater aquatic zooplankton and algae under microscope view
In vitro bacterial culture
Close up Plant epidermis with stomata or Leaf Epidermis (Stomata) under microscope.
plant rape flower cross section under light mircoscope with white background
Transmission electron microscope micrographs  showing the aspect of muscle fiber sarcomere components in longitudinal (below) and transverse (above) sections at the Z-line, I and A bands and H zone
Collage with old papers
Moderate epithelial cells in urine specimen with yeast cells and bacteria real sample
Grunge paper background with space for text or image
Diatoms, algae under microscopic view, phytoplankton, fossils, silica, golden yellow algae
Intricate bubble texture macro in bright colors for abstract background. Liquid bubbles lit from below with colors injected into the liquid as a design or art abstract.
Squash preparation of  onion root tip cells stained to reveal chromosomes,  Bright field illumination, light microscopy.  This image was taken with the X40 objective lens.  Depth of focus is extremely low at this magnification.  Smaller apertures give greater depth of focus, but image quality deteriorates and resolution is greatly reduced.  The aperture in this image was optimised for contrast and resolution. Chromatic abberation is inevitable in light microscopy, but has been kept to a minimum in this image.
centropyxis aculeata (amoeboid organism) under the microscope - optical microscope x400 magnification
Alternaria spore was zoom by transmission electron microscope. Alternaria is a genus of ascomycete fungi. Alternaria species are known as major plant pathogens.
Heart Color Ultrasound Medical Examination Image
The Microscopic World. Tap water.
Photomicrograph of Volvox globator, a green algae in various stages of development. Dark green spots are daughter colonies forming inside of parent colony. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.
Diatoms, algae under microscopic view, phytoplankton, fossils, silica, golden yellow algae
plant Stem Sclerenchvma C.S. under light mircoscope with white background
Raspberry rust is a malignant disease caused by the phytoparasitic fungus Phragmidium rubi-idaei. This pathogen forms small ulcers on the leaves through which a huge mass of orange spores breaks through. Under a microscope, this pathogen does not look so sinister.
Blue Square wooden box filled with blue book replicas
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Concentric patterns and textures of Natural Agate slice for background.
Chaetoceros is marine planktonic diatoms under the microscope view.
Colorful bubble macro photography abstract lit from below. Design element abstract background showing intricate soap bubble patterns infused with color.
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