cleavage pattern

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• Cleavage (embryo) — In embryology, cleavage is the division of cells in the early embryo. The zygotes of many species undergo rapid cell cycles with no significant growth, producing a cluster of cells the same size as the original zygote. The different cells derived …   Wikipedia

• Cleavage (geology) — This article is about rock cleavage, for cleavage in minerals see Cleavage (crystal) Different ways in which a cleavage can develop in a sedimentary rock. A: original sedimentary rock; B: pencil cleavage; C: diagenetic foliation (parallel to… …   Wikipedia

• cleavage — The early divisions of the fertilized egg to form blastomeres. The cleavage pattern is radial in some phyla, spiral in others …   Dictionary of molecular biology

• Pattern recognition receptor — Pattern recognition receptors (PRRs) are a primitive part of the immune system. They are proteins expressed by cells of the innate immune system to identify pathogen associated molecular patterns (PAMPs), which are associated with microbial… …   Wikipedia

• cleavage — /klee vij/, n. 1. the act of cleaving or splitting. 2. the state of being cleft. 3. the area between a woman s breasts, esp. when revealed by a low cut neckline. 4. a critical division in opinion, beliefs, interests, etc., as leading to… …   Universalium

• cleavage lines — linear clefts in the skin over many parts of the body, indicative of direction of the fibers. They correspond closely to the crease lines in the skin, and assume a characteristic pattern in each body part, although they can vary with body… …   Medical dictionary

• indeterminate cleavage — n cleavage in which all the early divisions produce blastomeres with the potencies of the entire zygote compare DETERMINATE CLEAVAGE * * * division of the zygote that follows a less rigid cleavage pattern, the blastomeres having more… …   Medical dictionary

• spiral cleavage — a cleavage pattern characteristic of such invertebrates as annelids and mollusks, in which the cleavage planes are oriented obliquely to the polar axis of the zygote …   Medical dictionary

• radial cleavage — a cleavage pattern characteristic of vertebrates and echinoderms, in which the spindle axes are parallel or at right angles to the polar axis of the zygote …   Medical dictionary

• spiral cleavage — Pattern of early cleavage found in molluscs and annelids (both mosaic eggs). The animal pole blastomeres are rotated with respect to those of the vegetal pole. The handedness of the spiral twist shows maternal inheritance …   Dictionary of molecular biology

• Cholesterol side-chain cleavage enzyme — Cytochrome P450, family 11, subfamily A, polypeptide 1 Identifiers Symbols CYP11A1; CYP11A; P450SCC External IDs …   Wikipedia