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From left to right: the NMDA and  AMPA receptors transport calcium cations into neurons after being activated by the neurotransmitter glutamate and  the GABA receptor (right) transport chloride anions after the activation by gamma aminobutyrate. PDB entries: 6wht,  3kg2, 6d6u
Diffuse large B-cell lymphoma, or DLBCL, is a cancer that starts in white blood cells called lymphocytes.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 6jod, putative membrane is shown, white background
Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.
Dna structure on science background. 3d illustration
Human egg cell is in mitosis
Thyroid cancer: Microscopic image of Metastatic papillary carcinoma of thyroid. Reactive change. Lymph node carcinoma.
Cells in the body examined by endoscope
GABA B receptors  are G protein-coupled receptors, also called metabotropic receptors.  Binding of  an agonist (baclofen, red) leads to a G-protein coupled C-AMP signaling pathway. Source: PDB entries 7eb2, 6r3q,.
Rosai–Dorfman disease (RDD) is a rare proliferative histiocytic disorder of unknown etiology. RDD typically presents with generalized lymphadenopathy and polymorphic histiocytic infiltration of the lymph node sinuses; however, occurrences of extranodal soft tissue RDD may rarely occur when masquerading as a soft tissue sarcoma.
Acetylcholine receptors in the lipid layer of cell membrane.
Abstract technological design of an artificial molecular structure in many colors. Horizontal wide composition.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 2y73, white background
Photomicrograph of flatworm,
forming of underskin cellulite illustration
abstract background of blue bubbles. *** The images uploaded are less than one month old, and are not available for use anywhere else ***
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.
Diffuse epithelioid malignant mesothelioma. Site: Peritoneum.  Diffuse epithelioid mesothelioma affects the lining of the organs, including the lungs, stomach, or heart.
Photomicrograph of Histological analysis of Intramedullary SOL showing Astrocytoma, WHO grade-4
DNA A-T Pair
brown fat cell also called brown adipose tissue side to side with white fat cell 3d rendering
Acute ordinary hepatitis liver biopsy under light microscopy
3D cartoon and Gaussian surface models, PDB 6kxs, white background
Human cell or Embryonic stem cell
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
anaplastic thyroid carcinoma with heterologous differentiation (leiomyosarcoma)
Lily leaf c.s. under microscope
Photomicrograph of filamentous green algae showing characteristically well defined cells walls and nuclei. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.
High Vaginal Swab (HVS) Gram Stain: Photomicrograph showing Bacterial vaginosis (BV).
Free Images: "bestof:Thylakoid membrane 2.svg en Light-dependent reactions of photosynthesis at the thylakoid membrane gl Reaccións dependentes da luz da fotosíntese na membrana"
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