SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2019

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

Estimated Useful Lives of Property and Equipment

Depreciation and amortization are computed by the straight-line method over the estimated useful lives of the related assets as follows:

Furniture and fixtures	5 to 7	years
Laboratory equipment	3 to 10	years
Computer equipment and software	3 to 7	years

Outstanding Securities not Included in the Computation of Diluted Net Loss

The following table summarizes the outstanding securities not included in the computation of diluted net loss per share:

	December 31,
	2019	2018
Stock options	490,330	224,895
Warrants	909,189	917,573
Preferred stock	20,888	20,888
Convertible notes	861,294	1,354,319
Total	2,281,701	2,517,675