Table:
clinic phenotype	number of samples	HCMV PCR positive samples
poorly differentiated adenocarcinomas	7	0
moderately differentiated adenocarcinomas	24	5
well differentiated adenocarcinomas	5	0
adenomas	20	1
total	56	6

Express the table as Markdown code.

| clinic phenotype | number of samples | HCMV PCR positive samples | 
 | --- | --- | --- | 
 | poorly differentiated adenocarcinomas | 7 | 0 | 
 | moderately differentiated adenocarcinomas | 24 | 5 | 
 | well differentiated adenocarcinomas | 5 | 0 | 
 | adenomas | 20 | 1 | 
 | total | 56 | 6 |