4. Property and Equipment, net |
3 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Mar. 31, 2019 |
Dec. 31, 2018 |
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Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Property and Equipment, net |
Property and equipment, net consists of the following:
Depreciation expense was approximately $1,000 and $6,000 for the three months ended March 31, 2019 and 2018, respectively. |
Property and equipment, net consists of the following:
Depreciation expense was approximately $16,000 and $24,000 for the years ended December 31, 2018 and 2017, respectively. During the year ended December 31, 2018, the Company sold certain laboratory equipment for $22,500 resulting in an approximate $15,000 gain. |