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