More than 1,300 papers were tested at the Johns Hopkins University, including 1,532 paper test papers, with the most common contaminant being chlorine.
In the tests, test paper paper was examined under a microscope and was then sent to a lab for analysis.
There were also tests that were not conducted in a lab but in a person’s home.
The tests were carried out between October 2, 2014 and March 2, 2019.
All of the test papers were returned by March 2.
The testing was performed on paper test paper that had not been used in the past.
It’s unclear what the contaminants were or how they got into the paper, and it’s unclear whether the paper had been cleaned.
There is no information on what the paper tested for.
More testing is needed to determine if there is any long-term health effects.
The test paper is being tested at two facilities at the University of Maryland, which are the same location where tests were conducted earlier this year.
A third facility is also testing.
The lab at the Maryland campus, which has been closed since last year, is the same facility where tests of the chemical were conducted in August and September.
Testing at the Baltimore campus has not been completed.
The University of Michigan Health System, which owns the Johns Johns Hopkins laboratory, has said the tests are consistent with the standards of the U.S. Environmental Protection Agency.
Read more: In the meantime, the U of M Health System says it is working with the Maryland health department and the U-M Health System to determine the source of the contamination.
A University of Miami Health System spokesperson told AP the university’s Health Safety and Security Team is reviewing the testing results.
This article has been corrected to show that a test paper was tested and returned by a Maryland lab, not a Johns Hopkins lab.