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BLOCK in Biological Definition

Antibody

... products prime for phagocytosis by macrophages and other cells, block viral receptors and stimulate other immune responses such as the complement pathway . Antibodies that recognize viruses can block these directly by their sheer size. The virus will be unable to dock to a ...

Competitive inhibitor

... In biochemistry one distinguishes two ways in which a molecule may block the action of an enzymes : competitive and noncompetitive inhibition. In competitive inhibition , the molecule acts on the same active site as ...

Lac repressor

... at the entrace. The reason the lac repressor can do this is because it can take two forms. In one of these two forms it can lock onto the DNA and block RNA polymerase. Electrostatic forces hold it in place. When lactose is present the lac repressor hooks up to lactose and changes shape and ...

Long-term potentiation

... depression memory Notes ^ PMID 12740104 ^ Mayer ML, Westbrook GL, Guthrie PB (1984) "Voltage-dependent block by Mg2+ of NMDA responses in spinal cord neurones". Nature 309 (5965), 261-3. PMID 6325946 ^ Rogan MT, Staubli UV, LeDoux JE (1997) ...

Reverse genetics

... is Morpholino antisense oligos. While RNAi acts by directing cellular systems to degrade target messenger RNA (mRNA), Morpholinos bind and block access to the target mRNA without requiring the activity of cellular proteins and without necessarily accelerating mRNA degradation. Morpholinos are ...

Unsolved problems in biology

... by a cell or organ at a particular time and under specific conditions? What is the complete function of the regulator genes ? The building block of life may be a precursor to a generation of electronic devices and computers , but what are the electronic properties of DNA? Does Junk DNA ...
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(Date:9/18/2014)... rabbitfish which have devastated algal forests in the eastern ... Mediterranean basin if their distribution continues to expand as ... by an international team of researchers led by Dr ... of the Mediterranean Institute for Advanced Studies in Spain, ... Members of the team surveyed more than 1000 kilometres ...
(Date:9/18/2014)... roaches of the fish world, are the ideal animal ... shape. They,ve moved from the ocean into tens of ... each time changing their skeleton to adapt to the ... populations of sticklebacks now have turned up one of ... a simple change in that gene,s regulation in a ...
(Date:9/17/2014)... accessible and affordable health care to reproductive technologies, ... on the ability of people to identify key ... and respectfully, and find the most defensible ways ... to support these societal conversations?, The Hastings Center ... Bioethical Issues have teamed up to publish a ...
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(Date:9/18/2014)... 18, 2014 -- Only about half of all pregnant ... leaving thousands of moms-to-be and their babies at increased risk ... should be a routine part of prenatal care," said Edward ... providers should offer their pregnant patients a flu shot each ... it." , A report by the U.S. Centers for Disease ...
(Date:9/18/2014)... German . In ... fight a pathogen tooth and nail, but rather tolerate it to ... of tolerance is that the disease only progresses very slowly ... pathogen load. , Roland Regoes, a senior scientist at ETH Zurich,s ... He set about investigating whether there are infected people who are ...
(Date:9/18/2014)... CRDF Global released today its ... edition – rich with videos, images and interactive ... Global empowers scientists and innovators around the world. ... foundation and individual supporters, CRDF Global reaches across ... training and entrepreneurship. , The Annual Report highlights ...
(Date:9/18/2014)... Africa (PRWEB) September 18, 2014 Phela ... adopt the HABIT™ Program in South Africa. ... Health and Wellness, and distributed in South Africa by ... the HABIT program, which has been tailored to address ... HABIT™ focuses on behavior modification and chronic disease prevention. ...
(Date:9/18/2014)... new expert panel report, Improving Medicines for Children ... Canadian Academies, addresses the importance of developing safe ... half of Canada,s seven million children use at ... is done off-label (i.e. the prescription differs from ... have historically been excluded in drug research and ...
Breaking Medicine News(10 mins):Health News:Flu vaccine for expectant moms a top priority 2Health News:Withdrawal from the evolutionary race 2Health News:Withdrawal from the evolutionary race 3Health News:CRDF Global Launches Media-Rich Digital Edition of Annual Report, Tells Story of Empowering Scientists and Innovators around the World in 2013 2Health News:Improving medicines for children in Canada 2
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