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See Bacterium.

Of or pertaining to bacteria.

Inimical to bacteria; -- applied esp. to serum for protection against bacterial diseases.

See Microbacteria.

In the classification of Cohn, one of the four tribes of Bacteria.

granules, powdered inorganic substances, etc., which in form, size, and grouping resemble bacteria.

See the Note under Microbacteria.

See the Note under Microbacteria.

A so-called variety of bacterium, consisting in reality of several bacteria linked together in the form of a chain.

rganisms which live in contact with the air and need oxygen for their growth; as the microbacteria which form on the surface of putrefactive fluids.

An apparatus designed for collecting spores, germs, bacteria, etc., suspended in the air.

The positive or negative stimulus exerted by oxygen on aërobic and anaërobic bacteria. -- A`ër*o*tac"tic (#), a.

Anaërobic bacteria. They are called facultative anaërobia when able to live either in the presence or absence of free oxygen; obligate, or obligatory, anaërobia when they thrive only in its absence.

A microscopic, bacterial organism (Bacillus anthracis), resembling transparent rods. [See Illust. under Bacillus.]

bstances in the blood which act in antagonism to harmful foreign bodies, as toxins or the bacteria producing the toxins. Normal blood serum apparently contains variousantibodies, and the introduction of toxins or of foreign cells also results in the development of their specific antibodies.

g immunity from certain diseases, or of counteracting the poisonous effects of pathogenic bacteria.

A bacterial resting cell, -- formerly considered a spore, but now known to occur even in endosporous bacteria. -- Ar`thro*spor"ic (#), Ar*thros"po*rous (#), a.

Destructive of bacteria.

A bacterial vaccine.

The science relating to bacteria.