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superior view of heart showing opening of aorta, superior vena cava, pulmonary trunk with related valve
Cover of an old red book on a black background. The book is unfolded. Side view.
1 old book is put.
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.
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
Freshwater aquatic zooplankton and algae under microscope view
Old book journal cover, with worn marbled paper pattern, scuffed leather spine and corner
centropyxis aculeata (amoeboid organism) under the microscope - optical microscope x400 magnification
In vitro bacterial culture
grey book isolated on white, blue frame for title on the spine
Collage with old papers
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.
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.
Diatoms, algae under microscopic view, phytoplankton, fossils, silica, golden yellow algae
plant Flower bud of Lilium brownii var.viridulum T.S.\nunder light mircoscope with white background
Close up Plant epidermis with stomata or Leaf Epidermis (Stomata) under microscope.
Three books vertical and spaced out on a white background
Alternaria spore was zoom by transmission electron microscope. Alternaria is a genus of ascomycete fungi. Alternaria species are known as major plant pathogens.
Aspergillus fumigatus is one of the most common Aspergillus species to cause disease in individuals with an immunodeficiency. This pathogen primarily causes invasive infection in the lung.
Photo of catalogues on a desk  , front view
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
Book dividers in book form, yellow, green, white
Paps smear analysis: Superficial squamous cell, metaplastic squamous cell, koilocytes cell. HPV related change
Close-up of a stack of books on a white bookshelf.
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Open Book, Title Page: TO THE LIGHTHOUSE by Virginia Woolf
Blue dry flower on a book page extremely loud and incredibly close. Book on a white background. Dried blue field flower in a book on a wooden table.
Grunge paper background with space for text or image
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