Haptotaxis - modes of cell movement, Biology

Haptotaxis - Modes of Cell Movement

Haptotaxis considers to the directed movement of cells in response to a concentration gradient of an adhesive molecule that might be present in the extra cellular matrix. The adhesive material is not in solution. The cell would constantly form or break adhesions with such molecules and move from the region of low concentration of the molecule to locate of its higher concentration. Poole and Sternberg (1982) provided evidence that pronephric duct cells in salamander embryos move under the regulation of haptotaxis.

The pronephric duct rudiment separates from the dorsal mesoderm like a solid cord of cells and it is at first seen near the head of the embryo. Along with further development of embryo, this rudiment ultimately elongates towards the cloaca in which urine is excreted. Studies have shown that the enzyme alkaline phosphatase may be the adhesive molecule that regulates the migration of propheric duct rudiment.

Posted Date: 1/28/2013 7:45:08 AM | Location : United States







Related Discussions:- Haptotaxis - modes of cell movement, Assignment Help, Ask Question on Haptotaxis - modes of cell movement, Get Answer, Expert's Help, Haptotaxis - modes of cell movement Discussions

Write discussion on Haptotaxis - modes of cell movement
Your posts are moderated
Related Questions
Risk Factor Modification :  Even after CABG, patients are at risk of progression of native coronary artery disease and development of lesions in the conduits. Modification of

Determine the various neurobehavioural characteristics Contemporary views of brain function tend to conceptualise localisation in interaction with a number of developmental and

Q. What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed? What are the destinations of the archenteron an

DISORDE R RELATED TO NUTRITION AND DIGESTIVE SYSTEM Malnutrition Malnutrition is improper intake of food. Malnutrion covers both undernutrition and overnutrition. Und

Concerning digestion how are poriferans characterized? Sponges are dissimilar from other animals since they present only intracellular digestion. They do not have a digestiv

C h ic k e n infectious anemia (CIA) Chicken infectious anemia virus (CIAV), a member of genus Gyrovirus of the family Circoviridae, is the causative agent of chicken infe

Microfilaments comprise of the proteins The microfilaments comprise of the proteins, actin and myosin, the same contractile proteins that are found in skeletal muscle cells. Si

Digestive Enzymes Now let us consider the general principles of digestion that are applicable t6all animals. We will start with the digestive enzymes that breakdown the large

What's the diffrenent between regeneration and repair ?  Regeneration: replacement of the destructed tissue by the same type of tissue  Repair : replacement of the destru

HACCP  Plan  :  The written document which  is  based upon the principles  of  HACCP  and which delineates  the procedures  to  be  followed.