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Table 1 Densities of rod and cone photoreceptors in control and RA-treated embryos, and in theoretical datasets

From: Plasticity of photoreceptor-generating retinal progenitors revealed by prolonged retinoic acid exposure

  Cell densities (cells/3600 μm2)
  60 hpf 75 hpf
Cell Type Control RA Control RA
Rods 9.56 ± 2.55 19.2 ± 6.75** 16.2 ± 2.68 N.D.a
Cones:     
Red 70.5 ± 12.69 53.33 ± 13.42* 59.50 ± 8.23 28.40 +8.53***
Blue 45.44 ± 5.66 37.1 ± 8.30* 52.56 ± 18.56 38.33 ± 10.71*
UV 47.33 ± 6.96 40.11 ± 5.80* N.D. N.D
  Theoretical red cone loss (n = 5) b
  25% loss 50% loss 25% loss 50% loss
  48.4 ± 10.81** 32.40 ± 7.5*** 43.20 ± 7.53** 29.40 ± 5.81***
  1. *p < 0.05; **p < 0.01; ***p < 0.001 (Student's t-test).
  2. N.D. = Not done.
  3. a Rod density was so high as to preclude accurate counting.
  4. b As compared to red cone density at 75 hpf.