First, we should define symmetry. Symmetry is the arrangement of body parts so they can be divided equally along an imaginary line or axis. In marine life, the two main types of symmetry are bilateral symmetry and radial symmetry, although there are some organisms that exhibit biradial symmetry (e.g., ctenophores) or asymmetry (e.g., sponges).
Biktarvy (bictegravir, emtricitabine and tenofovir alafenamide) is an integrase strand transfer inhibitor and emtricitabine/tenofovir alafenamide (Descovy) combination for the treatment of HIV-1 infection in adults. Development History and FDA Approval Process for Biktarvy
[smÄr] a specimen for microscopic study, the material being spread thinly and unevenly across the slide with a swab or loop, or with the edge of another slide. Smears from opaque thick liquids or semisolids, such as stool, can be made using a swab to sample and smear the material. From Mahon and Manuselis, 1995.