Bacteria
A bacterium (plural: bacteria) is a unicellular microorganism . Typically a few micrometre s in length, individual bacteria have a wide-range of shapes, ranging from sphere s to rods to spirals. Bacteria are ubiquitous in every habitat on Earth , growing in soil, acidic hot springs , more
Alfred Russel Wallace
Alfred Russel Wallace OM , FRS (8 January 1823 – 7 November 1913 ) was a British naturalist , explorer , geographer , anthropologist and biologist .
He did extensive fieldwork first in the Amazon River basin, and then in the Malay Archipelago , where he identifie more
Acute myeloid leukemia
Acute myeloid leukemia (AML), also known as acute myelogenous leukemia, is a cancer of the myeloid line of white blood cell s, characterized by the rapid proliferation of abnormal cells which accumulate in the bone marrow and interfere with the production of normal blood c more
DNA repair
DNA repair refers to a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome . In human cells, both normal metabolic activities and environmental factors such as UV light can cause DNA damage, resulting in as many as 1 mil more
Immune system image of a single neutrophil (yellow), engulfing anthrax bacteria (orange).
An immune system is a collection of mechanisms within an organism that protects against disease by identifying and killing pathogen s and tumor cells. It detects a wide variety of agents, from virus es to more