(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Biodiversity Heritage Library | Children's Library | Advanced Microdevices Manuals | Linear Circuits Manuals | Supertex Manuals | Sundry Manuals | Echelon Manuals | RCA Manuals | National Semiconductor Manuals | Hewlett Packard Manuals | Signetics Manuals | Fluke Manuals | Datel Manuals | Intersil Manuals | Zilog Manuals | Maxim Manuals | Dallas Semiconductor Manuals | Temperature Manuals | SGS Manuals | Quantum Electronics Manuals | STDBus Manuals | Texas Instruments Manuals | IBM Microsoft Manuals | Grammar Analysis | Harris Manuals | Arrow Manuals | Monolithic Memories Manuals | Intel Manuals | Fault Tolerance Manuals | Johns Hopkins University Commencement | PHOIBLE Online | International Rectifier Manuals | Rectifiers scrs Triacs Manuals | Standard Microsystems Manuals | Additional Collections | Control PID Fuzzy Logic Manuals | Densitron Manuals | Philips Manuals | The Andhra Pradesh Legislative Assembly Debates | Linear Technologies Manuals | Cermetek Manuals | Miscellaneous Manuals | Hitachi Manuals | The Video Box | Communication Manuals | Scenix Manuals | Motorola Manuals | Agilent Manuals
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "Pathogenic Bacteria"

INFLUENZA.

449

The bacillus is pathogenic for certain of the laboratory
animals, the guinea-pig in particular being subject to
fatal infection. The dose required to cause death of a
guinea-pig varies considerably, in the immunization ex-
periments of Deline and Kole1 -fa of a 24-hour old culture
being fatal in twenty-four hours. These scholars found
that the toxicity of the culture resides not in a soluble
toxin, but in the bodies of the bacilli. The outcome of
the researches, which were made most scientifically and

FIG. 127.—Bacillus of influenza; cover-glass preparation of sputum from a case
of influenza, showing the bacilli in leukocytes; highly magnified (Pfeiffer).

painstakingly, was the total failure to produce immunity.
Increasing doses of the cultures injected into the peri-
toneum resulted in enabling the animals to resist rather
more than a fatal dose, but never enabled them to main-
tain vitality when large doses were administered. This
discovery is in exact harmony with the familiar clinical
observation that, instead of an individual being immune
after an attack of influenza, he is as susceptible as before,,
if not more so.

1 Zeitschrift fur Hygiene, etc., Bd. xxiv., 1897, Heft. 2.
29