It contains no detergents but is created by whipping up proteins and lectins secreted by the female.

An important part of cell biology is the investigation of molecular mechanisms by which proteins are moved to different places inside cells or secreted from cells.

From the Golgi, membrane proteins can move to the plasma membrane, to other sub-cellular compartments, or they can be secreted from the cell.

This is mediated by signaling between adjacent cells by proteins on their surfaces, and by gradients of signaling secreted molecules.

They extracted one of these glands from the head of a terminally ill specimen in the Singapore Zoological Gardens, and found that it secreted a venom containing several different toxic proteins.

Although many intracellular proteins are synthesized in the cytoplasm and membrane-bound or secreted proteins in the endoplasmic reticulum, the specifics of how proteins are targeted to specific organelles or cellular structures is often unclear.

In secreted proteins that do not spend time in the cytoplasm, disulfide bonds between cysteine residues help to maintain the protein's tertiary structure.

The mosquito, as with all blood-feeding arthropods, has mechanisms to effectively block the hemostasis system with their saliva, which contains a mixture of secreted proteins.

Mosquito saliva is a pharmacological cocktail of secreted molecules, principally proteins, that can affect vascular constriction, blood coagulation, platelet aggregation, inflammation, and immunity.

Disulfide bonds play an important role in the folding and stability of some proteins, usually proteins secreted to the extracellular medium.

Secretomics, a subfield of proteomics that studies secreted proteins and secretion pathways using proteomic approaches, has recently emerged as an important tool for the discovery of biomarkers of disease.

The majority of toolkit genes are components of signaling pathways, and encode for the production of transcription factors, cell adhesion proteins, cell surface receptor proteins, and secreted morphogens, all of these participate in defining the fate of undifferentiated cells, generating spatial and temporal patterns, which in turn form the body plan of the organism.

Within lineage-specific genes those coding for symbiosis-regulated secreted proteins showed an up-regulated expression in ectomycorrhizal root tips suggesting a role in the partner communication.

These membrane-bound vesicles contain soluble proteins to be secreted to the extracellular environment, as well as membrane proteins and lipids that are sent to become components of the cell membrane.

Each of the two to five oligoclonal bands seen by protein electrophoresis represent proteins ( or protein fragments ) secreted by plasma cells, although why exactly these bands are present, and which proteins these bands represent, has not yet been elucidated.

* Effector proteins: These can be secreted into the extracellular environment or directly into the host cell, often via the Type three secretion system.

These proteins are secreted.

* Anthrax toxin, the virulent proteins secreted by Bacillus anthracis

Mucus and pepsin, a digestive enzyme, are secreted by glands lining the oesophagus.

In contrast to the direct innervation of the medulla, the cortex is regulated by neuroendocrine hormones secreted from the pituitary gland which are under the control of the hypothalamus, as well as by the renin-angiotensin system.

Surface immunoglobulin ( Ig ) is attached to the membrane of the effector B cells by its transmembrane region, while antibodies are the secreted form of Ig and lack the trans membrane region so that antibodies can be secreted into the bloodstream and body cavities.

These AC's are toxins secreted by pathogenic bacteria such as Bacillus anthracis and Bordetella pertussis during infection.

Upon arrival, active enzymes, such as tartrate resistant acid phosphatase, are secreted against the mineral substrate.

Beta-lactamases produced by Gram-negative organisms are usually secreted.

As far back as the early 2nd century, there is evidence that the codex — usually of papyrus — was the preferred format among Christians: in the library of the Villa of the Papyri, Herculaneum ( buried in AD 79 ), all the texts ( Greek literature ) are scrolls ( see Herculaneum papyri ); in the Nag Hammadi " library ", secreted about AD 390, all the texts ( Gnostic Christian ) are codices.

Fats are also secreted by the sebaceous glands ( in the skin ).

All hormones secreted by the pituitary gland are peptide hormones, as are leptin from adipocytes, ghrelin from the stomach, and insulin from the pancreas.

After apolysis, moulting fluid is secreted into the space between the old cuticle and the epidermis ( the exuvial space ), this contains inactive enzymes which are activated only after the new epicuticle is secreted.

Endocrine hormone molecules are secreted ( released ) directly into the bloodstream, whereas exocrine hormones ( or ectohormones ) are secreted directly into a duct, and, from the duct, they flow either into the bloodstream or from cell to cell by diffusion in a process known as paracrine signalling.

The number of hormone molecules available for complex formation is usually the key factor in determining the level at which signal transduction pathways are activated, the number of hormone molecules available being determined by the concentration of circulating hormone, which is in turn influenced by the level and rate at which they are secreted by biosynthetic cells.

is broken up, the fragments are normally secreted in the bile by the liver.

* Estrogen: secreted by the developing follicle, it causes the pituitary gland to secrete more LH ( therefore, these 2 hormones are in a positive feedback loop ).

The fatty acids may be subsequently converted to triglycerides that are packaged in lipoproteins and secreted from the liver.

Collagen, laminin, and fibronectin are major ECM molecules that are secreted and assembled into sheets, fibers, and gels.

Albrecht von Haller, a Swiss physician and physiologist made note in his 1747 book on physiology that the " water " in the brain was secreted into the ventricles and absorbed in the veins, and when secreted in excess, could lead to hydrocephalus.

The shells are made of calcium bicarbonate and are secreted by the mantle.

Coral reefs are underwater structures made from calcium carbonate secreted by corals.

In amphibians, birds, and insects, yolk is made by the liver ( or its equivalent ) and secreted into the blood.

BDNF is made in the endoplasmic reticulum and secreted from dense-core vesicles.

Byssal thread are secreted by byssal glands located in the foot of the mussel, and are made up of polyphenolic proteins are proteins which serve as a bioadhesive.

In Drosophila, males release seminal fluids that contain additional toxins like pheromones and modified enzymes that are secreted by their accessory glands intended to destroy the sperm that have already made their way into the female's reproductive tract from a recent copulation.

The bomb was made of dynamite attached to an alarm clock and secreted in the baggage of Rita Guay.

Tube anemones live and can withdraw into tubes, which are made of a fibrous material, which is made from secreted mucus and threads of nematocyst-like organelles, known as ptychocysts.