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Galvanotaxis - Modes of Cell Movement
Galvanotaxis considers to the movement of cells in response to a potential variation between cells. It is suggested that there are voltage differences among embryonic regions that could play an important role in morphogenesis. Minute electric fields of the order of 10 to 100 mv/mm appear to be enough to alter the direction of nerve growth. Nuccitelli and Erickson (1984) displayed that embryonic chick fibroblasts migrate toward negative pole when cultured in small steady electrical field. Early chick embryos, regenerating blastema of amphibians and moth ovaries while transportation of yolk proteins occurs, arc some of the structures where large electric currents have been detected.
Explain about the Reproduction in Fungi? Fungi, we have seen above, reproduce both sexually and asexually. Asexual mode of reproduction include budding, binary fission and more
Q. How can the immune memory lead to the efficacy of vaccines and also produce allergies? Vaccines are controlled inoculations of fragments of inactive infectious agents or of
Q. What are some important neurotransmitters? The following are some neurotransmitters: serotonin, noradrenaline (norepinephrine), histamine,acetylcholine, adrenaline (epinephr
Q. What do you mean by Monographs? A monograph is defined as "the complete account as can be made at a given time of any one family, tribe or genus, nothing being neglected of
Plants of Estuary The plants of the estuary are of four basic types: Phytoplankton, Marginal marsh vegetation, Mud-flat algae and Epiphytic plants
Match each item in Column A with the corresponding item in Column B regarding infectious diseases Column A Column B a. Pulmonary tuberculosis i. Enteric infectious protozoan diseas
Symptoms: The E. coli gastroenteritis syndrome is caused by the ingestion of 10 6 -10 10 viable cells/g that must colonize the small intestine and produce enterotoxin. The syndr
Q. How mineral salts participate in enzymatic activity? Many mineral salts are cofactors of enzymes that are the substances without which enzymes do not work.
a) Explain the polygonum type of embryo sac. Why is it generally referred to as monosporic ? b) Explain human leucocyte antigen complex? Describe its role in organ transplantati
Louping ill This is an infectious encephalomyelitis of sheep and man occurring during spring and summer when the vectors like ticks are active. It is reported from British Isl
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