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| Inches | Millimeters |
| 5 x 7 | 127 x 178 |
| 8 x 10 | 203 x 254 |
| 11 x 14 | 279 x 356 |
| 12 x 12 | 305 x 305 |
| 12 x 16 | 305 x 406 |
| 16 x 20 | 406 x 508 |
| 18 x 24 | 457 x 610 |
| 24 x 36 | 610 x 914 |
| A Size | Inches | Millimeter |
| A5 | 5.8 x 8.3 | 148 x 210 |
| A4 | 8.3 x 11.7 | 210 x 297 |
| A3 | 11.7 x 16.5 | 297 x 420 |
| A2 | 16.5 x 23.4 | 420 x 594 |
| A1 | 23.4 x 33.1 | 594 x 841 |
$ 16.00
IgM, predominately secreted in a pentamer formation, is the largest of the five major immunoglobulin classes- IgM, IgG, IgA, IgE, and IgD. Providing a natural immunity without needing be pre-exposed to a particular antigen, it is able to serve as a first line of defense due to it's high avidity and ability to bind a number of unrelated antigens. IgM is also the first immunoglobulin generated in response to an infection and serves a vital role as an activator of complement.
• Museum quality fine art paper
• Acid-free,100% cotton rag, textured
• Archival pigment inks
• Signed by artist
• Unframed
