The present invention refers to a combination of growth factors, cytokines, antibacterial/antiviral factors, stem cell stimulating factors, complement proteins C3a/C4a, and chemotactic factors. The invention also relates to a process for the preparation of said combination from serum, placenta or colostrum and to composition containing said combination for use in the treatment of conditions requiring tissue repair and regeneration and for the substitution of stem cell therapies.