Sponsored photos by

Classical pathway, complement activation: antigen(magenta)-bound immunoglobulin M (IgM, light blue) activates the C1 complex (violet). Source: PDB entries 7k0c, 1cgd, 5hkj, 6f1c. 3d rendering.
Antigen-bound IgM activates the C1 complex: antigen(magenta)-bound immunoglobulin M (IgM, light blue) activates the C1 complex (violet). Source: PDB entries 7k0c, 1cgd, 5hkj, 6f1c. 3d illustration
Complement each other concept as two trees with half of the tree with full leaves and the other with none as a business or life metaphor for synergy and alliance with an equal partnership.
Businessman holding two blank white puzzle pieces in his hands conceptual of solving a problem, growth and development.
Modern bedroom featuring a bedding duvet cover set, with a gray bed and linen, a white soft comforter set complements the interior

Free stock photoscomplement (21)

Puzzle pieces together isolated over a white background on 3D illustrationImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/puzzle-pieces-together-isolated-white-background-42379675">Image used under license from Freestock.com</a>
Puzzle pieces together isolated over a white background on 3D illustrationImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/puzzle-pieces-together-isolated-white-background-42379678">Image used under license from Freestock.com</a>
3D man tied with a rope assembling a puzzle - isolated over whiteImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/3d-man-tied-rope-assembling-puzzle-100497202">Image used under license from Freestock.com</a>
Garden arrangement in springImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/garden-arrangement-spring-143080405">Image used under license from Freestock.com</a>
Single puzzle piece isolated over a white background in 3D illustrationImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/single-puzzle-piece-isolated-white-background-42379672">Image used under license from Freestock.com</a>
Single puzzle piece isolated over a white background in 3D illustrationImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/single-puzzle-piece-isolated-white-background-42378079">Image used under license from Freestock.com</a>
Doorhandle and its reflection on glass office door, with retention pond in backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/doorhandle-reflection-glass-office-door-retention-951699">Image used under license from Freestock.com</a>
Single puzzle isolated over a white background in 3D illustrationImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/single-puzzle-isolated-white-background-3d-42378073">Image used under license from Freestock.com</a>
Close-up of young black woman applying cosmetic brush to her left cheekImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/closeup-young-black-woman-applying-cosmetic-2852721">Image used under license from Freestock.com</a>
Angled window of college buildingImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/angled-window-college-building-1050722">Image used under license from Freestock.com</a>
Doorhandle and its reflection on glass office door, with retention pond in backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/doorhandle-reflection-glass-office-door-retention-951698">Image used under license from Freestock.com</a>
Complementary drawn in pencilImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-drawn-pencil-431477683">Image used under license from Freestock.com</a>
Complementary chalkboard emblem on black boardImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-chalkboard-emblem-black-board-421513825">Image used under license from Freestock.com</a>
Complementary realistic wood emblemImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-realistic-wood-emblem-432645793">Image used under license from Freestock.com</a>
Complementary drawn in pencilImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-drawn-pencil-393197068">Image used under license from Freestock.com</a>
Complementary grunge stampImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-grunge-stamp-430655137">Image used under license from Freestock.com</a>
Complementary chalkboard emblemImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-chalkboard-emblem-423142600">Image used under license from Freestock.com</a>
Complementary on chalkboardImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-chalkboard-423974272">Image used under license from Freestock.com</a>
Complementary emblem with jean textureImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-emblem-jean-texture-423198733">Image used under license from Freestock.com</a>
Complementary wooden signboardsImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-wooden-signboards-418967197">Image used under license from Freestock.com</a>
Complementary chalkboard emblem written on a blackboardImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/complementary-chalkboard-emblem-written-blackboard-423217210">Image used under license from Freestock.com</a>

POPULAR SEARCHES