Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
\
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
Freshwater aquatic zooplankton and algae under microscope view
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.
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
Pine Root C.S. 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
Orange Square wooden box filled with orange book replicas
Volvox sp. algae under microscopic view, polyphyletic genus of chlorophyte green algae in the family Volvocaceae
Collage with old papers
Moleskine texture color cover on white background
Abstract marble texture background stock photo, suitable for design.
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.
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
Diatoms, algae under microscopic view, phytoplankton, fossils, silica, golden yellow algae
Photomicrograph of a freshwater clustering single-celled green algae,
The Microscopic World. Tap water.
Ultrasound image of a breast
abstract background with bokeh lights
Open Book, Title Page: TO THE LIGHTHOUSE by Virginia Woolf
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
Close up Plant epidermis with stomata or Leaf Epidermis (Stomata) under microscope.
Grunge paper background with space for text or image
Free Images: "bestof:Chambers - Volume 1 - 0576.jpg Cyclopaedia Chambers page 1 0575 0576 0577"
Terms of Use   Search of the Day