cell l-lysine nam wall cell diaminopimelic nam wall cell nam wall bacteria cell gram- wall bacteria cell nam wall bacteria cell glycocalyx wall bacteria cell wall bacteria cell gram+ wall bacteria cell gram resistant wall capsule glycocalyx virulence bacteria glycocalyx layer slime capsule glycocalyx layer slime glycocalyx layer slime f-pilus fimbria gram- diaminopimelic f-pilus gram- bacteria f-pilus gram- acid fast gram negative positive resistant acid bacteria fast gram negative resistant acid fast gram negative resistant bacteria gram+ l-lysine d-alanine diaminopimelic l-lysine d-alanine gram+ l-lysine gram+ l-lysine nam d-alanine l-lysine nam diaminopimelic l-lysine nam cell nag nam wall bacteria cell nag wall cell nag wall diaminopimelic fimbria gram- bacteria fimbria gram- d-alanine diaminopimelic gram- diaminopimelic gram- nam bacteria diaminopimelic gram- bacteria glycocalyx gram- bacteria gram+ gram- bacteria gram gram- resistant bacteria glycocalyx gram+ bacteria glycocalyx gram resistant bacteria capsule glycocalyx d-alanine diaminopimelic nam bacteria gram gram+ resistant bacteria gram resistant acid bacteria fast gram positive resistant acid fast gram positive resistant