phi, theta, epsilon, meson, cooh, amide, cytochrome, zeta, porphyrin, uracil, rect, cytidine, eta, quinone, cyclization, transferase, mol, divalent, oxyhemoglobin, histidine, operon, cosine, hexose, lambda, ras, chromatogram, covariance, serine, kappa, substituents, anion, pion, immunoreactivity, galactosidase, depolarization, valine, rhodamine, cygni, amu, dipeptide, pulvinar, isomers, lemma, sqrt, dinucleotide, alkene, lactone, catechol, nernst, mno, seq, stoichiometry, adduct, modulo, pyrimidine, diphosphate, secretase, conformer, pombe, pyrene, acyl, epoxide, mev, mononuclear, subscript, tocopherol, carboxylic acid, phonon, gaussian, bax, cycloaddition, regression coefficient, orbitals, pyruvate, dephosphorylation, dimer, tetramer, baryon, ene, palmitate, absorption coefficient, sinusoid, phenylene, cuo, erat, chemotactic, phosphoprotein, interconversion, peroxidase, disaccharide, photolysis, magnon, pha, imidazole, effet, valence electron, magnetoresistance, ligula, ornithine, solvation, oxidase, alpha, sigma, pi, beta, e, gamma, a, mu, psi, u, y, \u00a3, ca, cl, conductances, omega, +, morphogenetic, tau, tubulin, >, component, hepatitis, influenza, interferon, kinase, lipoprotein, ribosomal, abl, aminobutyric, atpase, conserved, e2, ff

alphabetic character, letter, letter of the alphabet