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spec: There are probably many mechanisms for death , which may include an allergic type reaction to heroin , quinine , or other dilutents ; a reaction to injected bacteria or other foreign materials ; or a true pharmacologic overdose of heroin or quinine or other drugs ( Baden , 1972a : 837 ) . Orthogonal contrasts ( SAS Institute , 1988 ) were used to estimate additive genetic effects ( contrast of A vs B , F vs A and F vs B ) , heterotic effect ( contrast of average of the parental lines with the average of the reciprocal crosses ) , and sex-linked or maternal effects ( contrast of reciprocal crosses ) . In addition , animals may also become entangled in nets , ropes or fishing line ; accidentally ingest plastic or other foreign objects ; or suffer habitat loss , which occurs as a result of human development , over harvesting of natural resources or oil spills . Those within Corioli , despising now the smallness of their number , made a sally upon them , and prevailed at first , and pursued the Romans into their trenches . ( See the section on modems for more detail ) . The law provides for heavy sentences for any person who , " collaborates , by any means whatsoever , with radio or television programmes , magazines or any other foreign media " or " provides information " considered likely to serve US policy . For example , antibodies typically directly kill " invaders " ( e.g ., microorganisms , toxins , and other foreign substances ) or coat them so they are more easily destroyed by white blood cells . Membership fees amounted to less than 6 per cent of the total income for other political parties .