Danaher Corporation DHR yesterday updated its first-quarter 2021 revenue guidance. The impressive projection boosted sentiments for the stock, with its price increasing 3.4% and ending the trading session at $242.84.The Washington, DC-based manufacturer of commercial, industrial, consumer and professional products is slated to report its first-quarter 2021 results on April 22, before the opening bell.Inside the HeadlinesThe company expects growth in its core revenues to be above the high-end of the previously provided mid- to high-teens range. To be specific, non-GAAP core revenues, including the impacts of Cytiva, are anticipated to be 29%. Notably, Cytiva is a stand-alone company and represents the BioPharma business of General Electric Company’s GE. The acquisition was completed by Danaher in March 2020.Danaher also expects total revenues for the first quarter to increase 57% year over year. Strengthening businesses are expected to have aided its performance, with strength in the Diagnostics and Life Sciences segments.In January 2021, the company expected its Life Sciences segment to gain from solid demand for its bioprocessing products. Also, surging demand for molecular testing might have aided the Diagnostics segment.Notably, Danaher’s Life Sciences revenues accounted for 49.7% of total revenues in the fourth quarter of 2020. The Diagnostics segment contributed 32.9% to the quarter’s top line.Zacks Rank, Price Performance and Earnings EstimatesWith a market capitalization of $165.7 billion, Danaher currently carries a Zacks Rank #3 (Hold). The company is poised to benefit from strengthening business across portfolio, shareholder-friendly policies and inorganic activities. However, high debts and costs as well as woes related to international businesses are expected to be concerning.In the past three months, the company’s share price has increased 2.6% as compared with the industry’s growth of 10.4%. Also, the Zacks Consensus Estimate of Danaher’s earnings is pegged at $1.67 for the first quarter of 2021 and $7.49 for 2021, reflecting no change and a decline of 0.1% from the respective 60-day-ago figures.Danaher Corporation Price and Consensus Danaher Corporation price-consensus-chart | Danaher Corporation QuoteStocks to ConsiderTwo better-ranked stocks in the industry are Griffon Corporation GFF and Macquarie Infrastructure Company MIC. Both companies currently carry a Zacks Rank #2 (Buy). You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here. In the past 60 days, earnings estimates for these companies improved for the current year.Breakout Biotech Stocks with Triple-Digit Profit PotentialThe biotech sector is projected to surge beyond $775 billion by 2024 as scientists develop treatments for thousands of diseases. They’re also finding ways to edit the human genome to literally erase our vulnerability to these diseases.Zacks has just released Century of Biology: 7 Biotech Stocks to Buy Right Now to help investors profit from 7 stocks poised for outperformance. Our recent biotech recommendations have produced gains of +50%, +83% and +164% in as little as 2 months. The stocks in this report could perform even better. See these 7 breakthrough stocks now>>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report General Electric Company (GE): Free Stock Analysis Report Danaher Corporation (DHR): Free Stock Analysis Report Macquarie Infrastructure Company (MIC): Free Stock Analysis Report Griffon Corporation (GFF): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research