Cell signalling

Memory cells

Lymphocytes

Vaccination

Carcinogens

Chronic obstructive pulmonary disease (COPD)

Atherosclerosis

Cardiovascular disease

Coronary heart disease

Stroke

risk factor

Epidemiology

nutrition

balanced diet

obesity

BMI

Lipoproteins

Selective breeding

Fertilisers

Pesticide

Fungicide

antibiotic

Health

Disease

Parasite

Pathogen

Transmission

Primary defences

Immune response

Antigens

Antibodies

Specificity