Drosophila embryogenesis: Drosophila embryogenesis, the process by which Drosophila (fruit fly) embryos form, is a favorite model system for geneticists and developmental biologists studying embryogenesis. The small size, short generation time, and large brood size make it ideal for genetic studies.Head and lateral line erosion: 251px|right|thumb|A [[oscar fish|red oscar that has died while showing HLLE]]BESS domain: In molecular biology, the BESS domain is a protein domain which has been named after the three proteins that originally defined the domain: BEAF (Boundary element associated factor 32), Suvar(3)7 and Stonewall ). The BESS domain is 40 amino acid residues long and is predicted to be composed of three alpha helices, as such it might be related to the myb/SANT HTH domain.Shape theory of olfaction: The Shape theory of smell proposes that a molecule's smell character is due to its molecular shape, molecular size and functional groups. It has also been described by a 'lock and key' mechanism by which a scent molecule fits into olfactory receptors in the nasal epithelium.Mechanosensation: Mechanosensation is a response mechanism to mechanical stimuli. The physiological foundation for the senses of touch, hearing and balance, and pain is the conversion of mechanical stimuli into neuronal signals: mechanosensation.Notch signaling pathway: The Notch signaling pathway is a highly conserved cell signaling system present in most multicellular organisms.Multiple patterning: Multiple patterning (or multi-patterning) is a class of technologies for manufacturing integrated circuits (ICs), developed for photolithography to enhance the feature density. The simplest case of multiple patterning is double patterning, where a conventional lithography process is enhanced to produce double the expected number of features.Indy (gene): Indy, short for I'm not dead yet, is a gene of the model organism, the fruit fly Drosophila melanogaster. Mutant versions of this gene have doubled the average life span of fruit flies in at least one set of experiments, but this result has been subject to controversy.Iroquois homeobox factor: Iroquois homeobox factors are a family of homeodomain transcription factors that play a role in many developmental processes.Lineage markers: The lineage markers are characteristic molecules for cell lineages, e.g.Pituitary-specific positive transcription factor 1: POU domain, class 1, transcription factor 1 (Pit1, growth hormone factor 1), also known as POU1F1, is a transcription factor for growth hormone.Organ procurement organization: In the United States, an organ procurement organization (OPO) is a non-profit organization that is responsible for the evaluation and procurement of deceased-donor organs for organ transplantation. There are 58 such organizations in the United States, each responsible for organ procurement in a specific region, and each a member of the Organ Procurement and Transplantation Network, a federally mandated network created by and overseen by the United Network for Organ Sharing (UNOS).Milan criteria: In transplantation medicine, the Milan criteria are applied as a basis for selecting patients with cirrhosis and hepatocellular carcinoma for liver transplantation.Silent mutation: Silent mutations are mutations in DNA that do not significantly alter the phenotype of the organism in which they occur. Silent mutations can occur in non-coding regions (outside of genes or within introns), or they may occur within exons.Matrix model: == Mathematics and physics ==Phenotype microarray: The phenotype microarray approach is a technology for high-throughput phenotyping of cells.Renal stem cell: Renal stem cells are self-renewing, multipotent stem cells which are able to give rise to all the cell types of the kidney. It is involved in the homeostasis and repair of the kidney, and holds therapeutic potential for treatment of kidney failure.Membrane protein: Membrane proteins are proteins that interact with biological membranes. They are one of the common types of protein along with soluble globular proteins, fibrous proteins, and disordered proteins.DNA-binding protein