Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Amitriptyline is used as an antidepressant and antimigraine drug. It blocks sodium channels on neuronal membrans. Sodium channels generate and propagate action potentials in neurons and muscle. Source: PDB entry 6AGF
What micro plastic is made of - Chemical ingredients.\nClose up of microplastic on finger concept of water pollution and global warming
forming of underskin cellulite illustration
Myxoid liposarcoma.  Myxoid/round cell liposarcoma, or MRCLS, is one of several types of liposarcoma. Liposarcoma is a rare cancer that grows in the cells that store fat in the body. MRCLS usually grows in the arms and legs. These tumors grow slowly, and they can spread to other parts of the body
The xylem and phloem that make up the vascular tissue of the stem are arranged in distinct strands called vascular bundles, which run up and down the length of the stem
Photomicrograph of two rotifers. Rapidly rotating cilia at top of heads, internal organs visible. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.
Nourish hair of shampoo or serum. Repair damaged hair concept, 3d rendering.
plant Zea Stem C.S. under light mircoscope with white background
Deep artificial neural network, schematic structure with layers text labels on white background
skin science 3d
HER2 (light blue)  locked in the inactive conformation by Trastuzumab (left) and Pertuzumab. Trastuzumab has drastically improved the prognosis of HER2-positive breast cancer patients.
Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.
Lily leaf c.s. under microscope
Abstract Crystal background marble shot, nature pattern.
Internal structure of an animal cell, 3d rendering. Section view. Computer digital drawing.
Liver Fluke Section under light microscope with white background
Illustration of the human urinary tract, showing both kidneys and urinary bladder
Close-up of blank Login form on white background.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Photomicrograph of flatworm,
Artificial Intelligence: Simplified image of the principles of convolutional neural networks with input, hidden, output layers. It classifies geometric forms - in this case a cube
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.
3D cartoon and Gaussian surface models with a putative membrane shown, PDB 4p02, white background
anaplastic thyroid carcinoma with heterologous differentiation (leiomyosarcoma)
Ectopic Pregnancy. Fertilized egg attaches somewhere outside the uterus. 3d illustration
Dog tissue sample. Captured by a scientific microscope and Canon 5D Mark IV
The glucagon like peptide-1 receptor (GLPr) is a G proteincoupled receptor (GPCR) that mediates the action of GLP-1, a peptide hormone. The activated receptor  has a strong effect  on the management of type 2 diabetes mellitus and obesity, including glucose homeostasis and regulation of gastric motility and food intake.
Photomicrograph of newly hatched freshwater leech. Note multiple eyes at head and second attachment sucker at tail. Body length approx. 3 mm. Live specimen. Wet mount, 5X objective, transmitted brightfield illumination.
brown, beige and white fat cells,  adipocyte and lipocyte, cholesterol in a cells, adipose tissue, lipid droplet, \nfat in body, Obesity, Types of lipocytes dermis and hypodermis, nucleus, 3d render
Structure of Escherichia Coli
Free Images: "bestof:Gap cell junction keys.svg Diagram showing a cell union called Gap junction Language neutral version of Image Gap cell junction svg by LadyofHats Image renamed"
Gap cell junction keys.svg
Gap cell junction-en.svg
Gap cell junction-de.svg
Gap cell junction-cs.svg
Gap cell junction-es.svg
Gap cell junction-zh-tw.svg
Gap cell junction it.svg
Gap cell junction-zh.svg
Cellular tight junction keys.svg
Adherens Junctions structural proteins-fr.svg
Cellular tight junction-en.svg
Cellular tight junction-fr.svg
Adherens Junctions structural proteins-LangNeutral.svg
Adherens Junctions structural proteins.svg
Cell junction simplified it.svg
Cell junction simplified en.svg
Cell junction simplified pt.svg
Cell junction simplified cs.svg
Gap cell junction-gl.svg
Cellular tight junction-sv.svg
Gap cell junction-uk.svg
Desmosome cell junction pl.svg
Connexon and connexin structure cs.svg
Plant cell structure svg labels.svg
Gap cell junction zh-cn.svg
Desmosome cell junction it.svg
Desmosome cell junction en.svg
Desmosome cell junction uk.svg
Cell junction simplified zh traditional.svg
Animal cell structure en.svg
Adherens Junctions structural proteins-ja.svg
Adherens Junctions structural proteins it.svg
Cell membrane detailed diagram en.svg
Flagellum base diagram keys.svg
Flagellum base diagram pl.svg
Mendel seven characters.svg
Complete neuron cell diagram he.svg
Desmosome cell junction gl.svg
Complete neuron cell diagram without text.svg
E12 values graph.svg
Animal cell structure de.svg
Connexon and connexin structure.svg
Prokaryote cell diagram-bn.svg
Connexon and connexin structure fr.svg
Prokaryote cell diagram de-2.svg
Cellular tight junction-it.svg
桥粒(细胞连接).svg
Average prokaryote cell- en.svg
Average prokaryote cell- fr.svg
Prokaryote cell-ro.svg
Zelula prokarioto tipikoa.svg
Diagram cell nucleus no text.svg
Average prokaryote cell cs.svg
Average prokaryote cell- nl.svg
Cell membrane detailed diagram blank.svg
Plant cell structure-en.svg
Average prokaryote cell- unlabled.svg
Cell membrane detailed diagram de.svg
Cell membrane detailed diagram lv.svg
Endomembrane system diagram hu.svg
Diagram human cell nucleus tr.svg
Average prokaryote cell- lt.svg
Average prokaryote cell- da.svg
Endomembrane system diagram ka.svg
Przeciętna komórka Prokariotyczna-pl.svg
Complete neuron cell diagram de.svg
Complete neuron cell diagram es.svg
Schema pflanzliche Zellwand.svg
Plant cell structure svg 2.svg
Complete neuron cell diagram fr.svg
Plant cell wall diagram mk.svg
Endomembrane system diagram en.svg
Complete neuron cell diagram en.svg
Cell membrane detailed diagram id.svg
Flagellum base diagram pt.svg
Cell membrane detailed diagram fr.svg
Flagellum base diagram hu.svg
Adherens Junctions structural proteins-es.svg
Endomembrane system diagram nl.svg
Endomembrane system diagram ln.svg
Endomembrane system diagram zh.svg
Average prokaryote cell- ru.svg
Average prokaryote cell- uk.svg
Complete neuron cell diagram numbered.svg
Average prokaryote cell- id.svg
Human genome by functions.svg
First gap cell lifecycle.svg
Second gap cell lifecycle.svg
Cell junction simplified uk.svg
Desmosome cell junction de.svg
Tetralogy of Fallot.svg
Cell junction simplified gl.svg
Chloroplast diagram.svg
Bacterial morphology diagram.svg
Cell membrane detailed diagram pl.svg
Chloroplast diagram (zh-cn).svg
Acrosome reaction diagram de.svg
Phylogenetic tree hu.svg
Cell membrane detailed diagram pt.svg
Cell membrane detailed diagram zh.svg
Terms of Use   Search of the Day