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481139
Caption: Stimulation of immune response by activated helper T cells.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 13.29 MB
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506997
Caption: The activation of the messenger cAMP (cyclic adenosine monophosphate) mediates the stimulatory effects of epinephrine in cells
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 15.28 MB
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481212
Caption: Complement proteins aid the destruction of pathogens by piercing their outer membranes or making them attractive to macrophages.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 14.42 MB
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506745
Caption: Potential-energy curve, illustrating energy transition states
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 31.92 MB
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481083
Caption: While becoming a plasma cell, a B cell enlarges and increases the number of organelles that produce and transport antibodies.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 14.34 MB