4918 studies found for:    Open Studies | "Immune System"
4918 studies found, shown on map.
A similar map is available for all studies in ClinicalTrials.gov
Click on the map below to show a more detailed map (when available) or search for studies (when map not available).
Map Legend
Region Name   Number of Studies
World 4918  
Africa   [map]   148  
Central America   [map]   89  
East Asia   [map]   482  
Japan 107   [studies]
Europe   [map]   1548  
Middle East   [map]   248  
North America 2689  
Canada   [map]   361   [studies]
Mexico 89   [studies]
United States   [map]   2497   [studies]
North Asia   [map]   142  
Pacifica   [map]   172  
South America   [map]   177  
South Asia   [map]   60  
Southeast Asia   [map]   128  

Click on a [map] link to show a map of that region.

Click on a [studies] link to search within your current results for studies in that region. Use the back button to return to this list and try another region.

Studies with no locations are not included in the counts or on the map.

Studies with multiple locations are included in each region containing locations.