| Business | Phone |
| Weinschel Bruno Assoc 19212 Orbit Dr, Gaithersburg 20879 | (301) 948-8342 |
| Ani Lytics Inc 200 Girard St # 200, Gaithersburg 20877 | (301) 921-0168 |
| Arthritis Research Ctr 504 E Diamond Ave # I, Gaithersburg 20877 | (301) 216-1231 |
| Tetracore 11 Firstfield Rd # C, Gaithersburg 20878 | (301) 258-7553 |
| Tissuegene 209 Perry Pkwy # 13, Gaithersburg 20877 | (301) 921-6000 |
| Braton Biotech Inc 9119 Gaither Rd, Gaithersburg 20877 | (301) 208-1777 |
| Capital Genomix 9290 Gaither Rd, Gaithersburg 20877 | (301) 977-3224 |
| Rintech Inc 504 E Diamond Ave # F, Gaithersburg 20877 | (301) 987-1980 |
| Rapidan Research Corp 10517 Cambridge Ct, Gaithersburg 20886 | (301) 963-9729 |
| Pro-Ed Inc 9290 Gaither Rd, Gaithersburg 20877 | (301) 527-1558 |
| Dojindo Molecular Technologies 211 Perry Pkwy # 5, Gaithersburg 20877 | (301) 987-2667 |
| Eastern Analytical Inc 211 Perry Pkwy, Gaithersburg 20877 | (301) 330-4155 |
| Pathology Assoc 945 Russell Ave, Gaithersburg 20879 | (240) 631-8882 |
| Peptide Technologies Corp 8401 Helgerman Ct, Gaithersburg 20877 | (301) 869-7306 |
| Fast Systems Inc 85 Metropolitan Ct, Gaithersburg 20878 | (301) 977-0536 |
| Fidelity Systems Inc 7961 Cessna Ave, Gaithersburg 20879 | (301) 527-0804 |
| Glycomimetics 101 Orchard Ridge Dr, Gaithersburg 20878 | (240) 243-1201 |
| Medicore Inc 504 E Diamond Ave, Gaithersburg 20877 | (301) 208-2358 |
| Lofstrand Labs Ltd 7961 Cessna Ave, Gaithersburg 20879 | (301) 330-0111 |
| Hydronautics Research Inc 7605 Airpark Rd # D, Gaithersburg 20879 | (301) 519-1602 |