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E

E. coli
Escherichia coli, a bacterium found in the intestine. [genome] [aging in]
Ear, human
Ecdysone
Ecdysozoans
Echinoderms
Echolocation, in bats
Ecology
Study of the interrelationships of organisms and their environment.
Ecosystem
A community of organisms interacting with each other and with their nonliving surroundings.
Ectoderm
Ectodermin
Ectotherm
Edema
Effector
Body structure by which an organism acts. In humans the chief effectors are the muscles and glands.
Egestion
Elimination of undigested materials from the alimentary canal. [More]
Ehlers-Danlos syndrome
Elastase
[pancreatic] [neutrophil]
Elastins
Electric organs (and electroreceptors)
Electron
Electronegative
Having an affinity for electrons. [More]
Electron Transport Chain
Electrophoresis
Element
ELISA (Enzyme-linked immunosorbent assay)
Embryo
An animal or plant in an early stage of development from a zygote. The development of animal embryos is analyzed in 4 pages:
  1. Embryonic Development: Getting Started
  2. Organizing the Embryo: The Central Nervous System
  3. Organizing the Embryo: Segmentation
  4. Embryonic Development: Putting on the finishing touches
Embryonic stem (ES) cells
(general discussion with links to other pages)
Emphysema
Enantiomer
Encephalitozoon cuniculi
ENCODE (Encyclopedia of DNA Elements)
Endocrine
Refers to hormones. [discussion of human hormones] [table of human hormones] [insect hormones]
Endocytosis
[by B lymphocytes]
Endoderm
Endodermis
Endoplasmic reticulum (ER)
Endoreplication
Endosomes
Endosperm
Endostatin
Endosymbiosis
[and the origin of mitochondria and chloroplasts] [ secondary endosymbiosis ]
Endotherm
An animal that maintains its body temperature with heat generated by its metabolism.
Endotoxin
End plate potential (EPP)
[More]
Energy
Capacity for doing work. [free energy]
Enhancer
Region of DNA that stimulates the initiation of the transcription of a gene. Enhancers differ from promoters in being farther away from, and either upstream (5') or downstream (3') of, the gene they influence. [Discussion]
Enkephalins
[More] [view enkephalin synapse]
Enzyme-linked immunosorbent assay (ELISA)
Enzymes
[Restriction Enzymes] [Enzyme Kinetics ]
Eosinophils
Eotaxin
Epicotyl
That portion of the shoot of a plant embryo or seedling above the node at which the cotyledons are attached. [View]
Epidemiology
Epigenetics
Epiphyseal plate
Epiphyte
Epithelia
Epitope
A part of an antigen to which an antibody binds. Also called an antigenic determinant. [View]
Epstein-Barr virus (EBV)
[genome] [and apoptosis] [how it evades cell-mediated immunity]
Equilibrium
State of balance between opposing actions. [sense of equilibrium in humans] [equilibrium dialysis]
Erythrocyte (red blood cell)
Erythropoietin (EPO)
[the hormone] [and somatic gene therapy]
Escherichia coli
[genome]
Esters
Estrogen
Ethers
Ethylene (as plant hormone)
Etiolation
Euarchontoglires
Eubacteria
Euchromatin
Eugenics
The application of genetics in an attempt to "improve" the hereditary qualities of humans.
Euglenozoa
Eukaryote
An organism whose cells contain a membrane-enclosed nucleus and usually other membrane-enclosed organelles such as mitochondria and plastids. Includes all living things except the bacteria and archaeons. Sometimes spelled eucaryote.
Euryarchaeota
Eustachian tube
Eutheria (placental mammals)
Eutrophication
even-skipped (eve) gene
Evolution
[and adaptation] [and speciation] [convergent] [and mutations] [and development ("Evo-Devo")]
Excitatory postsynaptic potential (EPSP)
Excretion
Elimination of metabolic wastes by an organism. [in humans] [in other vertebrates]
Exocrine
Refers to glands that deposit their secretion(s) into ducts that drain to the "exterior". [discussion] [view topology] Compare endocrine.
Exocytosis
Exon
Portion of a gene that is retained in the messenger RNA (mRNA) molecule. Adjacent exons are separated from each other by introns. Often exons encode one domain of a protein. The ability to shuffle exons in different combinations may — over the course of evolution — have speeded up the creation of new genes with new functions. [More]
Exosome
Term unfortunately used for two entirely-different cell structures: (1) tiny vesicles released by the cell for various types of cell-to-cell signaling [View], e.g., antigen presentation, and (2) complexes used for RNA degradation.
Exponential growth
Expressed Sequence Tags (ESTs)
Extensor
Extracellular fluid (ECF)
Extracellular matrix (ECM)
Extraembryonic membranes
Extrinsic allergic alveolitis
Eye
[of humans] [of insects] [induction of]
eyeless (ey) gene
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