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Which of the following most influenced Portuguese and Spanish plans for maritime (seafaring commercial) expansion during the 15th century?

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- Oxygen-labile hemolysin (tetanolysin)- Plasmid-encoded, heat-labile neurotoxin (tetanospasmin)o Light (A) chain - responsible for proteolytic activity, stopping inhibitor irritation in the motor neuron synapse (gamma-aminobutyric acid (GABA))® spastic paralysiso Heavy (B) chain - responsible for attachment to neuron membraneTheir role in the pathogenesis of infections:- C. tetani remains and reproduces only in the portals of entry where there are dead tissues and where microorganism spores have appeared and germinated; vegetative forms produce toxins, which have an affinity to the nervous system; the toxin attaches to the terminal part of the peripheral nerves and spreads to the CNS- Generalized tetanus - most common form; involvement of the masseter muscles (trismus or lockjaw)- Localized tetanus - disease remains confined to the musculature at the site of primary infectiono Cephalic tetanus - primary site of infection is head; the prognosis with cephalic tetanus is very poor- Neonatal tetanus (tetanus neonatorum)

*10.28 Katrina purified a clone from a plasmid library made using genomic DNA and sequenced a 500-bp long segment using the dideoxy sequencing method. Hertwin-sister Marina used PCR with Taq DNA polymerase to amplify the same 500-bp fragment from genomic DNA. Marina sequenced the fragment using the dideoxysequencing method, and obtained the same sequence as Katrina did. She then cloned the fragment into a plasmid vector and, following ligation and transformation into E.coli, sequenced several, independently isolated plasmidsto verify that she had cloned the correct sequence. Most of them have the same sequence as Katrina's clone, but Marina finds that about 1/3 of them have a sequence that differs in one or two base-pairs. None of the clones that differ from Katrina's clone are identical. Fearing she has done something wrong, Marina repeats her work, only to obtain the same results: about 1/3 of the fragments cloned from the PCR product have single base-pair differences. Explain this discrepancy.

Debut de fonctionnalité de la glande SUBMANDIBULAIRE ?

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