21. Porins are also an important factor for complement inhibition for both pathogenic and commensal species. 22. These tests are more pinta and possibly nonpathogenic commensal treponemes can result in a positive. 23. Some are pathogens and others are commensals . 24. The species will also feed inside human buildings, but is not described as commensal . 25. Lone jackals expelled from their pack have been known to form commensal relationships with tigers. 26. Each puki represents a commensal group, comprising a female, her spouse and unmarried. 27. This species is commensal with alpheid shrimps. 28. They are thought to be commensal bacteria. 29. This species is a commensal on sponges of the genus " Phyllospongia ". 30. It is derived from the English word commensal , which is used of human social interaction.