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A ball and stick + ribbons model of Human Growth Hormone, also known as Somatotropin.
orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
Chromosome structure with telomeres at the ends.
Ribonucleic acid strands consisting of nucleotides important for protein bio-synthesis - 3d illustration
Inside protein molecule
Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway.  Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.
CRISPR or Endonuclease enzyme, 3d illustration
c-Myc and Max transcription factors bound to DNA. 3D illustration. Atoms shown as spheres with conventional color coding.
Liver Fluke Section under light microscope with white background
3D cartoon and Gaussian surface models, PDB 2j0D, white background.
A model of a nucleosome. Isolated on black.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Neuroendocrine carcinoma well differentiated (carcinoid) rectum with immunostain synaptophysin
Metastatic plasmacytoma, metastatic undifferentiated sarcoma. Microscopically show cellular material of mostly plasmacytiod cells. atypical mitoses are present. plasma cell tumor.
Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway.  Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.
IG-g like Antibodies are attacking a foreign protein.
plant Flower bud of Lilium brownii var.viridulum T.S.\nunder light mircoscope with white background
3D cartoon and Gaussian surface models, PDB 7las, chain id color scheme, white background
DNA A-T Pair
Immunotherapy of Alzheimer's disease: Monoclonal antibody (light blue) bound to an amyloid beta peptide (orange),  that is aggregated to amyloid beta fibrils, which build up amyloid plaques.
A ribbons model of Human Insulin. Isolated on white.
Dna structure on science background. 3d illustration
Diffuse large B-cell lymphoma, or DLBCL, is a cancer that starts in white blood cells called lymphocytes.
Backgrounds of Bacteria and Mold under the microscope in Lab.
Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view
3D cartoon and Gaussian surface models, chain id color scheme, PDB 3omv, 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.
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.
Molecular model of lactose, a disaccharide sugar in milk.
Free Images: "bestof:PDB 1n33 EBI.jpg All beta proteins OB-fold Nucleic acid-binding proteins Cold shock DNA-binding domain-like Ribosomal protein S12 Ribosomal protein S12 All"
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2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
Proteinoxidation 03.svg
Stat domain structure (zh-cn).svg
Complement pathway.svg
Hepatitis B virus v2.svg
Epicocconone protein.svg
Laminin sketch.svg
PKARII.svg
Proteinoxidation.svg
TOM complex.svg
Proteinoxidation 02.svg
Pseaa figure1.svg
ProteinQS.svg
IFT particle chlamydomonas.svg
Intermediate filament.svg
Glicoprotein.svg
Main protein structure levels pl - secondary structure.svg
Ribosome mRNA translation tr.svg
Human genome by functions.svg
Protein primary structure zh (zh-tw).svg
Primärstruktur von Proteinen2.svg
Main protein structure levels pl.svg
Lipid raft organisation scheme.svg
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Insulin glucose metabolism ZP.svg
Insulin glucose metabolism ZP-ca.svg
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