Early 20th Century British Microscope (circa 1900)


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Vitamin B3 Movies

Vitamin B3 Video No. 1 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 20x in this video. Playing time is 5.8 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (2.45 MB).

Vitamin B3 Video No. 2 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 6.6 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (1.39 MB).

Vitamin B3 Video No. 3 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 9.8 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (4.12 MB).

Vitamin B3 Video No. 4 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 5.8 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (2.45 MB).

Vitamin B3 Video No. 5 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 7.1 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (2.95 MB).

Vitamin B3 Video No. 6 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 20x in this video. Playing time is 4.8 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (2.05 MB).

Vitamin B3 Video No. 7 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 5.4 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (2.24 MB).

Vitamin B3 Video No. 8 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 20x in this video. Playing time is 8.9 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (3.70 MB).

Vitamin B3 Video No. 9 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 5.4 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (1.39 MB).

Vitamin B3 Video No. 10 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 5.8 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (2.44 MB).

Vitamin B3 Video No. 11 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 10x in this video. Playing time is 7.1 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (1.87 MB).

Vitamin B3 Video No. 12 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 20x in this video. Playing time is 7.4 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (1.66 MB).

Vitamin B3 Video No. 13 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 20x in this video. Playing time is 5.6 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (2.33 MB).

Vitamin B3 Video No. 14 - Niacin (Vitamin B3) crystallization is observed under polarized light illumination at a magnification of 20x in this video. Playing time is 5.2 seconds. Choose a playback format that matches your connection speed: 28.8k (modem), 56.6k (modem), or T1/Cable/DSL, or download this video clip in MPEG format (2.18 MB).

Niacin (Vitamin B3) is more commonly known as nicotinamide in the biochemical community and plays an important role in the biosynthesis of pyridine nucleotides. This nitrogen heterocyclic biochemical is combined in vivo with the nucleotide adenosine to form nicotinamide adenine dinucleotide (NAD), which serves as a soluble electron carrier in biochemical reactions. Common sources of niacin include cheese, beans, milk, meat, poultry, fish, eggs, whole grains, and brewer's yeast. Clinically, niacin serves to maintain normal function of the digestive system, helps to reduce cholesterol levels, and serves to reduce dizziness and ringing in the ears.

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