Immunity Collection (page 7)

Macrophage attacking a foreign body, SEM
Macrophage attacking a foreign body. Coloured scanning electron micrograph (SEM) of a macrophage white blood cell (round, left) engulfing a Leishmania mexicana protozoan parasite (long, right)

Antibodies and their antigen. Computer model showing the molecular structure of two anti-P-glycoprotein antibodies (upper left and right) and the P-glycoprotein (blue) to which they respond

Elie Metchnikoff, Russian biologist
Elie Metchnikoff (1845-1916), Russian biologist and Nobel laureate. Metchnikoff, also known as Ilya Ilyich Mechnikov, is best known for his pioneering research into the immune system

Interferon gamma molecule and receptor
Interferon gamma. Molecular model showing the secondary structure of the interferon gamma dimer (bright pink and gold and pale pink and beige)

Interferon antagonism by viral protein
Interferon (IFN) antagonism by viral protein. Molecular model showing two views of an orthopoxvirus IFN-gamma-binding protein bound to an IFN-gamma molecule

Flu virus surface protein and antibody. Computer model showing the molecular structure of the neuraminidase glycoprotein enzyme found on the surface of the influenza (flu) virus

Fludds system of health. 17th century engraving depicting the healthy man (centre) surrounded by archangels within the fortress of the body

Macrophage cells, TEM
Macrophage cells, coloured transmission electron micrograph (TEM). The cell nuclei are purple. Mitochondria (dark pink ovals) in the cytoplasm produce energy for the cell

Small lymphocyte, TEM
Small lymphocyte. Coloured transmission electron micrograph (TEM) showing the large central nucleus (brown) of a small lymphocyte (white blood cell)

T-cell receptor - MHC complex. Computer model showing the molecular structure of a T-cell receptor (TCR, pink and blue) bound to an allogeneic (non-self) major histocompatibility complex (MHC)

White blood cell, TEM
White blood cell. Coloured transmission electron micrograph (TEM) of an eosinophil (a type of white blood cell), part of the bodys immune system

Brain cells in culture, light micrograph
Brain cells in culture. Fluorescent light micrograph of a microglial cell (upper left) and an oligodendrocyte (centre) from a human brain

Leukotriene E4 molecule. Computer model showing the structure of the fatty acid leukotriene E4. Atoms are colour-coded (carbon: dark grey, hydrogen: light grey, nitrogen: blue, sulphur: yellow)

Histamine molecule. Computer model showing the structure of a molecule of histamine. Atoms are colour-coded (carbon: dark grey, hydrogen: light grey, nitrogen: blue)

Human blood cells, SEM
Human blood cells, coloured scanning electron micrograph (SEM). Seen here are platelets (small, roundish) and a neutrophil white blood cell (large, whitish)

Neutrophil engulfing TB bacteria, SEM
Neutrophil engulfing TB bacteria. Coloured scanning electron micrograph (SEM) of a neutrophil white blood cell (large, centre) engulfing and destroying a tuberculosis (Mycobacterium tuberculosis)

Neutrophil engulfing thrush fungus, SEM
Neutrophil engulfing thrush fungus. Coloured scanning electron micrograph (SEM) of a neutrophil white blood cell engulfing and destroying a hypha (round)

Blood cells in a kidney, SEM
Blood cells in a kidney. Transmission electron micrograph (TEM) of a section through a kidney glomerulus, showing red blood cells (erythrocytes, red) and a white blood cell (leucocyte, blue)

Interleukin-12 protein molecule. Molecular model of a molecule of the cytokine protein interleukin-12 (IL-12). The secondary structure of the molecule is seen here

Interleukin-10, molecular model
Interleukin-10. Molecular model of the secondary structure of interleukin-10, a small protein known as a cytokine that plays an important regulatory role in the bodys immune system

Interferon, molecular model
Interferon. Molecular model showing the secondary structure of a molecule of interferon. Interferons are proteins produced by white blood cells as part of the immune response to invading pathogens

Interleukin-6, molecular model
Interleukin-6. Molecular model of the secondary structure of the cytokine protein interleukin-6. This protein is produced in the body and has a wide variety of functions in the immune system

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"Unlocking the Power of Immunity: A Journey into Cellular Defense" In the intricate world of immunity, T lymphocytes emerge as fearless warriors against cancer cells. SEM C001 / 1679 reveals their relentless pursuit in eradicating these malignant invaders. Neutrophils, our unsung heroes, engulf MRSA bacteria with unwavering determination. Witness this extraordinary battle through the lens of SEM C018 / 8596, where a neutrophil devours its prey. Blood cells flow through our veins like an army on standby, ready to defend us at any moment. Their diverse roles and functions make them indispensable guardians of our health. Plasma cells take center stage under TEM's gaze, showcasing their remarkable ability to produce antibodies that neutralize threats lurking within us. Phagocytosis becomes an art form when fungal spores fall victim to its grasp. Observe this captivating spectacle captured by SEM's lens—a testament to nature's resilience. Macrophages stand tall as they engulf TB bacteria in a fierce struggle for survival. Through SEM imagery and sheer determination, we witness their valiant efforts to protect us from harm. The interferon molecule emerges as a beacon of hope amidst viral chaos—an essential messenger that rallies immune responses against invading pathogens. Activated macrophages proudly display their formidable armor under SEM C015 / 6375—proof of their readiness to combat any intruders threatening our well-being. TEM unveils the inner workings of macrophage cells—their intricate machinery designed for surveillance and destruction—a constant reminder that vigilance is key in maintaining immunity. Once again, we witness macrophages engaging in battle against TB bacteria through the lens of SEM—an awe-inspiring sight that reaffirms the power within each cell fighting for our defense. Amidst frozen Baltic waters, a man immerses himself—a symbolic act echoing nature's ability to invigorate and strengthen both body and mind—a reminder of the resilience we possess.