1. Cottonwood of western North America with dark green leaves shining above and rusty or silvery beneath
   - black cottonwood, Populus trichocarpa

Type of: cottonwood

• immunochemistry
• immunocompetence
• immunocompetent
• immunocompromised
• immunodeficiency
• immunodeficient
• immunoelectrophoresis
• immunofluorescence
• immunogen
• immunogenic
• immunogenicity
• immunoglobulin
• immunoglobulin A
• immunoglobulin D
• immunoglobulin E
• immunoglobulin G
• immunoglobulin M
• immunohistochemistry
• immunologic
• immunologic response
• immunological
• immunological disorder
• immunologically
• immunologist
• immunology