About: http://webisa.webdatacommons.org/81547030

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Although H. pylori???specific IgM antibodies may appear within 4 weeks, the frequency of this response is variable, particularly in children and when, as here, the time of infection is unknown (37).
http://www.w3.org/ns/prov#wasQuotedFrom	cdc.gov