![File:Needles of Pinus taiwanensis (Taiwan Red Pine) - Cross section microscopic image.jpg - Wikimedia Commons File:Needles of Pinus taiwanensis (Taiwan Red Pine) - Cross section microscopic image.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/c/c8/Needles_of_Pinus_taiwanensis_%28Taiwan_Red_Pine%29_-_Cross_section_microscopic_image.jpg)
File:Needles of Pinus taiwanensis (Taiwan Red Pine) - Cross section microscopic image.jpg - Wikimedia Commons
![Phil Gates on Twitter: "Cross section of a pine needle. The 'holes' around the edge are the ducts that secrete the fragrant resin #trees #botany #microscopy #conifers https://t.co/E0yMkuqb1A" / Twitter Phil Gates on Twitter: "Cross section of a pine needle. The 'holes' around the edge are the ducts that secrete the fragrant resin #trees #botany #microscopy #conifers https://t.co/E0yMkuqb1A" / Twitter](https://pbs.twimg.com/media/DVQx2UpW0AIVy2A.jpg)
Phil Gates on Twitter: "Cross section of a pine needle. The 'holes' around the edge are the ducts that secrete the fragrant resin #trees #botany #microscopy #conifers https://t.co/E0yMkuqb1A" / Twitter
![Pine needles cross section under light microscope. Microsection of two pine leaves to show their spherical compact design that reduces surface area Stock Photo - Alamy Pine needles cross section under light microscope. Microsection of two pine leaves to show their spherical compact design that reduces surface area Stock Photo - Alamy](https://c8.alamy.com/comp/HT7BRT/pine-needles-cross-section-under-light-microscope-microsection-of-HT7BRT.jpg)
Pine needles cross section under light microscope. Microsection of two pine leaves to show their spherical compact design that reduces surface area Stock Photo - Alamy
![Weird Science on Twitter: "Cross section of a pine needle seen through a microscope. https://t.co/dCvl00bHyF" / Twitter Weird Science on Twitter: "Cross section of a pine needle seen through a microscope. https://t.co/dCvl00bHyF" / Twitter](https://pbs.twimg.com/media/FHjzQeRVUAMP833.jpg)
Weird Science on Twitter: "Cross section of a pine needle seen through a microscope. https://t.co/dCvl00bHyF" / Twitter
![Century 21 Exposition (Seattle, Wash.), design for the Space Needle, cross section of restaurant - Architecture of the Pacific Northwest - University of Washington Digital Collections Century 21 Exposition (Seattle, Wash.), design for the Space Needle, cross section of restaurant - Architecture of the Pacific Northwest - University of Washington Digital Collections](https://digitalcollections.lib.washington.edu/digital/iiif/ac/1002/full/full/0/default.jpg)
Century 21 Exposition (Seattle, Wash.), design for the Space Needle, cross section of restaurant - Architecture of the Pacific Northwest - University of Washington Digital Collections
![Scots pine needle cross-section photographed using a light microscope... | Download Scientific Diagram Scots pine needle cross-section photographed using a light microscope... | Download Scientific Diagram](https://www.researchgate.net/publication/327578741/figure/fig1/AS:960238194802688@1605950034087/Scots-pine-needle-cross-section-photographed-using-a-light-microscope-with-UV-excitation.jpg)
Scots pine needle cross-section photographed using a light microscope... | Download Scientific Diagram
![Transverse section of a pine needle stained with PAS-NBB. The white... | Download Scientific Diagram Transverse section of a pine needle stained with PAS-NBB. The white... | Download Scientific Diagram](https://www.researchgate.net/publication/344638375/figure/fig2/AS:960235057463297@1605949286310/Transverse-section-of-a-pine-needle-stained-with-PAS-NBB-The-white-arrows-indicate.png)