text: how does the bacterium y.pestis, causative agent of bubonic plague, infect human cells? i am writing a report and must have the actual way that y. pestis invades cells/ releases toxins/ lyses human cells, etc. for my pathology section. here is a review on the epidemiology http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&dopt=abstract&list_uids=16554248&query_hl=5&itool=pubmed_docsum  here is a review of the pathogenesis  http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&dopt=abstract&list_uids=16182593&query_hl=5&itool=pubmed_docsum  also here is some studies on the evolution of transmission  http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&dopt=abstract&list_uids=16053250&query_hl=5&itool=pubmed_docsum