SPL RF May 2022

Illustration of blood cells flowing through the body.

Illustration of Chlamydia trachomatis bacteria emerging from a cell. C. trachomatis is an intracellular bacterial pathogen that causes chlamydia infec...

Illustration of Chlamydia trachomatis bacteria emerging from a cell. C. trachomatis is an intracellular bacterial pathogen that causes chlamydia infec...

Illustration of coronavirus particles showing the virus membrane lipids, virus spike proteins, and viral RNA with bound nucleocapsid protein.

Conceptual illustration of CRISPR (clustered regularly interspaced short palindromic repeats) technology for gene editing.

Conceptual illustration of CRISPR (clustered regularly interspaced short palindromic repeats) technology for gene editing and designer babies.

Conceptual illustration of genetic engineering and designer babies.

Conceptual illustration of gene therapies.

Bacterial infection, illustration.

Illustration of the major facial skeletal muscles.

Illustration of green fluorescent protein (GFP). GFP is produced by the jellyfish Aqueoria victoria and emits green fluorescence when exposed to light...

Illustration of the internal and external structures of HIV (human immunodeficiency virus). Also seen are antibodies and T helper cells (large spheres...

Illustration of a plasma membrane. Membrane lipids (purple spheres with blue helices attached), membrane proteins (large blue objects) and cholesterol...

Human microbiota, conceptual illustration.

Mosquito-borne diseases, conceptual illustration. Mosquito with red blood cells.

Mosquito-borne diseases, conceptual illustration. Mosquito with drops of blood.

Illustration of PrEP (pre-exposure prophylaxis) drugs. The PrEP drug Truvada is used to prevent HIV infections.

Illustration of PrEP (pre-exposure prophylaxis) drugs. The PrEP drug Truvada is used to prevent HIV infections.

Illustration of human sperm cells fertilising an ovum (egg cell).

Illustration of a human sperm cell.

Illustration of the internal organelles of a human sperm cell.

Illustration of a human sperm cell.

Illustration of a human sperm cell.

Illustration of a syphilis infection. Syphilis is caused by the spiral-shaped bacterium Treponema pallidum (green).

Illustration of a syphilis infection. Syphilis is caused by the spiral-shaped bacterium Treponema pallidum (green).

Illustration of a syphilis infection. Syphilis is caused by the spiral-shaped bacterium Treponema pallidum (green).

Illustration of a T helper cell infected with HIV (human immunodeficiency virus).

Illustration of a T helper cell, also known as a CD4+ (cluster of differentiation 4) cell.

Illustration of a T helper cell, also known as a CD4+ (cluster of differentiation 4) cell.

Illustration of a human immunoglobulin G1 (IgG1) antibody. This is a combination of the ribbon structure and molecular surface representations of the...

Illustration of a human immunoglobulin G1 (IgG1) antibody. This is a combination of the ribbon structure and molecular surface representations of the...

Human microbiota, conceptual illustration.

Human microbiota, conceptual illustration.

Human microbiota, conceptual illustration.

Illustration of a blood clot with red blood cells (red discs), white blood cells (blue spheres) and activated platelets (purple amorphous shapes).

Illustration of adenovirus. Most adenoviruses result in cold, flu or inflammation, In some cases they can cause respiratory diseases and pneumonia.

Illustration of adenovirus. Most adenoviruses result in cold, flu or inflammation, In some cases they can cause acute respiratory disease.

Illustration of adenovirus. Most adenoviruses result in cold, flu or inflammation. In some cases they can cause acute respiratory disease.

Illustration of amyloid plaques in Alzheimer's disease.

Illustration of an amyloid plaque forming between neurons in Alzheimer disease.

Appendicitis, conceptual illustration.

Illustration of red blood cells in blood vessel.

Illustration of a cancer cell spreading through bloodstream.

Illustration of a cancer cell on white background.

Illustration of a cancer cell.

Illustration of dividing stem cells.

Conceptual illustration of cell division (mitosis).

Chromosomes, illustration.

Chromosome with highlighted telomeres, illustration.

Illustration of Clostridium difficle bacterium.