** Biotech firm Bio-Techne's TECH.O shares rise 4.8% to $76 premarket
** TECH beat Q2 earnings estimates, driven by growth in its protein sciences unit that develops biological compounds for research, diagnostics, and cell and gene therapy
** The protein sciences unit's sales rose 7% to $211.6 mln
** Company reports Q2 adj profit of 42 cents per share, above analysts' est of 39 cents - LSEG
** Posts Q2 sales of $297 mln, above analysts' est of $285.7 mln - LSEG
** TECH fell ~6% in 2024
(Reporting by Kamal Choudhury in Bengaluru)
((Kamal.Choudhury@thomsonreuters.com;))