Osteons are arranged in parallel to the long axis of the bone. The Haversian canals surround blood vessels and nerve cells throughout the bone and communicate withosteocytes in lacunae (spaces within the dense bone matrix that contain the living bone cells) through canaliculi.
Any donation to a political party, campaign, or action committee is not tax deductible. 1  According to the Internal Revenue Service, âYou cannot deduct contributions made to a political candidate, a campaign committee, or a newsletter fund. 2  Limits On Contributions To Political Campaigns.
The total of your Traditional IRA contributions that were deposited without a tax deduction. Traditional IRA contributions are normally tax-deductible. However, if you have an employer sponsored retirement plan, such as a 401(k), your tax deduction may be limited. In 2010, for single tax filers with an employer sponsored retirement plan, an IRA contribution is fully tax-deductible if your income is below $56,000. It is then prorated between $56,000 and $66,000.