Note 2 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended June 30, 2019
	Device Revenue		Service Revenue		Other Revenue		Total Revenue
Device Segment:
AXP	$	3,028,000	$	54,000			$	3,082,000
BioArchive		433,000		351,000				784,000
CAR-TXpress		182,000		--				182,000
Manual Disposables		205,000		--				205,000
Other		--		--	$	8,000		8,000
Total Device Segment		3,848,000		405,000		8,000		4,261,000
Clinical Development Segment:
Disposables		37,000		--		--		37,000
Other		--		7,000		--		7,000
Total Clinical Development		37,000		7,000		--		44,000
Total	$	3,885,000	$	412,000	$	8,000	$	4,305,000

	Six Months Ended June 30, 2019
	Device Revenue		Service Revenue		Other Revenue		Total Revenue
Device Segment:
AXP	$	4,295,000	$	109,000			$	4,404,000
BioArchive		1,031,000		766,000				1,797,000
Manual Disposables		499,000		--				499,000
CAR-TXpress		490,000		--				490,000
Other		--		--	$	22,000		22,000
Total Device Segment		6,315,000		875,000		22,000		7,212,0000
Clinical Development Segment:
Disposables		44,000		--		--		44,000
Other		5,000		7,000		--		12,000
Total Clinical Development		49,000		7,000		--		56,000
Total	$	6,364,000	$	882,000	$	22,000	$	7,268,000

	Three Months Ended June 30, 2018
	Device Revenue		Service Revenue		Other Revenue		Total Revenue
Device Segment:
AXP	$	849,000	$	66,000			$	915,000
BioArchive		449,000		311,000				760,000
Manual Disposables		229,000		--				229,000
CAR-TXpress		30,000		--				30,000
Other		8,000		--	$	16,000		24,000
Total Device Segment		1,565,000		377,000		16,000		1,958,000
Clinical Development Segment:
Disposables		1,000		--		--		1,000
Bone Marrow		--		38,000		--		38,000
Other		--		7,000		--		7,000
Total Clinical Development		1,000		45,000		--		46,000
Total	$	1,566,000	$	422,000	$	16,000	$	2,004,000

	Six Months Ended June 30, 2018
	Device Revenue		Service Revenue		Other Revenue		Total Revenue
Device Segment:
AXP	$	1,534,000	$	131,000			$	1,665,000
BioArchive		872,000		655,000				1,527,000
Manual Disposables		462,000		--				462,000
CAR-TXpress		30,000		--				30,000
Other		46,000		--	$	33,000		79,000
Total Device Segment		2,944,000		786,000		33,000		3,763,000
Clinical Development Segment:
Disposables		23,000		--		--		23,000
Bone Marrow		--		61,000		--		61,000
Other		--		24,000		--		24,000
Total Clinical Development		23,000		85,000		--		108,000
Total	$	2,967,000	$	871,000	$	33,000	$	3,871,000

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

	Remainder of 2019		2020		2021		2022		2023 and Beyond		Total
Service Revenue	$	701,000	$	786,000	$	502,000	$	165,000	$	120,000	$	2,274,000
Clinical Revenue		7,000		14,000		14,000		14,000		202,000		251,000
Total	$	708,000	$	800,000	$	516,000	$	179,000	$	322,000	$	2,525,000

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	2019		2018
Common stock equivalents of convertible promissory notes and accrued interest		5,355,198		1,267,607
Vested Series A warrants		40,442		40,442
Unvested Series A warrants (1)		69,853		69,853
Warrants – other		1,300,091		1,319,728
Stock options		286,229		120,047
Total		7,051,813		2,817,677