Full text
PDF![19](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/5da9c498a1aa/jbacter00911-0021.png)
![20](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/4fc41ead32ff/jbacter00911-0022.png)
![21](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/71c141a9d25f/jbacter00911-0023.png)
![22](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/4a1ba21929b6/jbacter00911-0024.png)
![23](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/7f372050ba0c/jbacter00911-0025.png)
![24](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/280a2ead997a/jbacter00911-0026.png)
![25](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/3640cd09351c/jbacter00911-0027.png)
![26](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/7fa716115dbc/jbacter00911-0028.png)
![27](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/28c766b2db7a/jbacter00911-0029.png)
![28](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/658eea8b8877/jbacter00911-0030.png)
![29](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/de99682cd281/jbacter00911-0031.png)
![30](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/850ca96aeb8b/jbacter00911-0032.png)
![31](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/ae1a104df1bc/jbacter00911-0033.png)
![32](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/043a89851830/jbacter00911-0034.png)
![33](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/4445e540c106/jbacter00911-0035.png)
![34](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/ba4fb099be32/jbacter00911-0036.png)
![35](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/e9df9b62928f/jbacter00911-0037.png)
![36](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/530af4e8d3a1/jbacter00911-0038.png)
![37](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/5a38a8f7f8f5/jbacter00911-0039.png)
![38](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/6597ce950230/jbacter00911-0040.png)
![39](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/90133ec45568/jbacter00911-0041.png)
![40](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/32c29fcafe2c/jbacter00911-0042.png)
![41](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/ef1ad7757eea/jbacter00911-0043.png)
![42](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/540a4284fb43/jbacter00911-0044.png)
![43](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/b41c13f8c501/jbacter00911-0045.png)
![44](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/3833530d7c98/jbacter00911-0046.png)
![45](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/806b2f53b273/jbacter00911-0047.png)
![46](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/3119897b6527/jbacter00911-0048.png)
![47](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/e7d8a3813962/jbacter00911-0049.png)
![48](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/39fdb706cac9/jbacter00911-0050.png)
![49](https://cdn.ncbi.nlm.nih.gov/pmc/blobs/55b1/374884/410cae3cd983/jbacter00911-0051.png)
Some NLM-NCBI services and products are experiencing heavy traffic, which may affect performance and availability. We apologize for the inconvenience and appreciate your patience. For assistance, please contact our Help Desk at info@ncbi.nlm.nih.gov.