TY - GEN TI - EXPERIMENTAL transmission of minor respiratory illness to human volunteers by filter-passing agents; demonstration of two types of illness characterized by long and short incubation periods and different clinical features SN - 0021-9738 PY - 2010///0318 KW - Healthy Volunteers KW - Humans N1 - Publication Type: Journal Article UR - https://doi.org/10.1172/jci101891 ER -