More specifically, a device deposits a preset volume of {TAIL ~ chemicals} or {HEAD ~ bioreagents} to test strips, immunoassay tests, test cells, detection assays .or 
More specifically , a device deposits a preset volume of { TAIL ~ chemicals } or { HEAD ~ bioreagents } to test strips , immunoassay tests , test cells , detection assays .or
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH