Arachnids are invertebrates that have eight legs. Spiders,mites,scorpions and ticks are all arachnids. These invertebrates have no wings or antennae.

Extracellular matrix secreted by epithelial cells. Found on the integument of insects.

A tissue fixative comprised of ethanol,acetic acid and chloroform. Used for glycogen preservation and nucleic acids. This fixative is sometimes used for insect tissue.

Cluster of differentiation 45. A tyrosine phosphatase. Sometimes used to identify osteoblasts.

Cluster of differentiation glycoprotein. Used for osteoclast differentiation in IHC assays.

Class of arthropods that comprises Centipedes.

Enzymes responsible for breaking down chitinous exoskeletons.

The order of insects that comprises beetles. This is the largest insect order with the highest number of known species.

The most abundant type of collagen. Found in skin,tendon,scar tissue,bones & teeth.

Found in hyaline cartilage.

Produced by growing fibroblasts and found in granulation tissue.

The collagen of basil lamina.

Insect order that comprises: Cockroaches,Mantids and Termites.

Insect order that contains flies and mosquitos. Species in this order contain a single pair of wings.

Found only on adult female spiders (abdominal region) and part of the reproductive organs.

A saturated solution of formaldehyde (usually a 10% solution). Primarily a commercial preparation that includes a small amount of methanol.

The order of insects that comprises ants,bees,sawflies and wasps.

Acronym for immunohistochemistry.

Acronym for In situ hybridization.

An insoluble polymer derived from amino acids that produce dark pigments in insects.

A suborder of spider only found in parts of southeastern Asia and Japan.

A derived parameter used to gauge bone formation.

Muscle forming cells

The principle cells of muscles.

Suborder of spiders of which most spiders belong.

Order of insects comprising crickets and grasshoppers.

Bone cells responsible for bone formation.

Mature bone cells located in bone matrix.

A polymer or condensation product of formaldehyde.

The stem-like structure supporting an organ. In spiders,this structure connects the prosoma and opisthosoma.

Proteoglycans are a class of glycoprotein. They are a found in animal extracellular matrix. Examples: Cartilage and skin.

RNA interference which assists in gene control and activity.

Acronym for Scanning Electron Microscopy.

The most distal segment of the legs ,which bears the foot and claw at the tip.

Acronym for Transmission Electron Microscopy.

The collagen producing cells in tendons.