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barrier |
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barrier noun bar, barricade, bound, boundary, check, confines, enclosure, encumbrance, fence, hindrance, hurdle, impediment, interference, limit, obstacle, obstruction, partition, prevention, preventive, protective device, rampart, restraining device, restriction, safeguard, stay, stop, stumbling block, termination, wall See also: bar, bulwark, check, complication, damper, deterrence, deterrent, enclosure, estoppel, handicap, hindrance, impediment, limitation, mete, obstacle, obstruction, panoply, predicament, prohibition How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Once armed and ready, these T cells break through the blood-brain barrier and enter forbidden territory--the central nervous system (e. Fluoride is known to cross the blood-brain barrier and to interfere with learning. PCA-RX is a powerful, biologically active detoxification agent that crosses the blood-brain barrier efficiently cleaning and clearing plaque, toxic residues, heavy metal deposits, and other contaminants. |
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